DDoS Botnet Aisuru Blankets US ISPs in Record DDoS

The world’s largest and most disruptive botnet is now drawing a majority of its firepower from compromised Internet-of-Things (IoT) devices hosted on U.S. Internet providers like AT&T, Comcast and Verizon, new evidence suggests. Experts say the heavy concentration of infected devices at U.S. providers is complicating efforts to limit collateral damage from the botnet’s attacks, which shattered previous records this week with a brief traffic flood that clocked in at nearly 30 trillion bits of data per second.

Since its debut more than a year ago, the Aisuru botnet has steadily outcompeted virtually all other IoT-based botnets in the wild, with recent attacks siphoning Internet bandwidth from an estimated 300,000 compromised hosts worldwide.

The hacked systems that get subsumed into the botnet are mostly consumer-grade routers, security cameras, digital video recorders and other devices operating with insecure and outdated firmware, and/or factory-default settings. Aisuru’s owners are continuously scanning the Internet for these vulnerable devices and enslaving them for use in distributed denial-of-service (DDoS) attacks that can overwhelm targeted servers with crippling amounts of junk traffic.

As Aisuru’s size has mushroomed, so has its punch. In May 2025, KrebsOnSecurity was hit with a near-record 6.35 terabits per second (Tbps) attack from Aisuru, which was then the largest assault that Google’s DDoS protection service Project Shield had ever mitigated. Days later, Aisuru shattered that record with a data blast in excess of 11 Tbps.

By late September, Aisuru was publicly flexing DDoS capabilities topping 22 Tbps. Then on October 6, its operators heaved a whopping 29.6 terabits of junk data packets each second at a targeted host. Hardly anyone noticed because it appears to have been a brief test or demonstration of Aisuru’s capabilities: The traffic flood lasted less only a few seconds and was pointed at an Internet server that was specifically designed to measure large-scale DDoS attacks.

Aisuru’s overlords aren’t just showing off. Their botnet is being blamed for a series of increasingly massive and disruptive attacks. Although recent assaults from Aisuru have targeted mostly ISPs that serve online gaming communities like Minecraft, those digital sieges often result in widespread collateral Internet disruption.

For the past several weeks, ISPs hosting some of the Internet’s top gaming destinations have been hit with a relentless volley of gargantuan attacks that experts say are well beyond the DDoS mitigation capabilities of most organizations connected to the Internet today.

Steven Ferguson is principal security engineer at Global Secure Layer (GSL), an ISP in Brisbane, Australia. GSL hosts TCPShield, which offers free or low-cost DDoS protection to more than 50,000 Minecraft servers worldwide. Ferguson told KrebsOnSecurity that on October 8, TCPShield was walloped with a blitz from Aisuru that flooded its network with more than 15 terabits of junk data per second.

Ferguson said that after the attack subsided, TCPShield was told by its upstream provider OVH that they were no longer welcome as a customer.

“This was causing serious congestion on their Miami external ports for several weeks, shown publicly via their weather map,” he said, explaining that TCPShield is now solely protected by GSL.

Traces from the recent spate of crippling Aisuru attacks on gaming servers can be still seen at the website blockgametracker.gg, which indexes the uptime and downtime of the top Minecraft hosts. In the following example from a series of data deluges on the evening of September 28, we can see an Aisuru botnet campaign briefly knocked TCPShield offline.

Paging through the same uptime graphs for other network operators listed shows almost all of them suffered brief but repeated outages around the same time. Here is the same uptime tracking for Minecraft servers on the network provider Cosmic (AS30456), and it shows multiple large dips that correspond to game server outages caused by Aisuru.

BOTNETS R US

Ferguson said he’s been tracking Aisuru for about three months, and recently he noticed the botnet’s composition shifted heavily toward infected systems at ISPs in the United States. Ferguson shared logs from an attack on October 8 that indexed traffic by the total volume sent through each network provider, and the logs showed that 11 of the top 20 traffic sources were U.S. based ISPs.

AT&T customers were by far the biggest U.S. contributors to that attack, followed by botted systems on Charter Communications, Comcast, T-Mobile and Verizon, Ferguson found. He said the volume of data packets per second coming from infected IoT hosts on these ISPs is often so high that it has started to affect the quality of service that ISPs are able to provide to adjacent (non-botted) customers.

“The impact extends beyond victim networks,” Ferguson said. “For instance we have seen 500 gigabits of traffic via Comcast’s network alone. This amount of egress leaving their network, especially being so US-East concentrated, will result in congestion towards other services or content trying to be reached while an attack is ongoing.”

Roland Dobbins is principal engineer at Netscout. Dobbins said Ferguson is spot on, noting that while most ISPs have effective mitigations in place to handle large incoming DDoS attacks, many are far less prepared to manage the inevitable service degradation caused by large numbers of their customers suddenly using some or all available bandwidth to attack others.

“The outbound and cross-bound DDoS attacks can be just as disruptive as the inbound stuff,” Dobbin said. “We’re now in a situation where ISPs are routinely seeing terabit-per-second plus outbound attacks from their networks that can cause operational problems.”

“The crying need for effective and universal outbound DDoS attack suppression is something that is really being highlighted by these recent attacks,” Dobbins continued. “A lot of network operators are learning that lesson now, and there’s going to be a period ahead where there’s some scrambling and potential disruption going on.”

KrebsOnSecurity sought comment from the ISPs named in Ferguson’s report. Charter Communications pointed to a recent blog post on protecting its network, stating that Charter actively monitors for both inbound and outbound attacks, and that it takes proactive action wherever possible.

“In addition to our own extensive network security, we also aim to reduce the risk of customer connected devices contributing to attacks through our Advanced WiFi solution that includes Security Shield, and we make Security Suite available to our Internet customers,” Charter wrote in an emailed response to questions. “With the ever-growing number of devices connecting to networks, we encourage customers to purchase trusted devices with secure development and manufacturing practices, use anti-virus and security tools on their connected devices, and regularly download security patches.”

A spokesperson for Comcast responded, “Currently our network is not experiencing impacts and we are able to handle the traffic.”

9 YEARS OF MIRAI

Aisuru is built on the bones of malicious code that was leaked in 2016 by the original creators of the Mirai IoT botnet. Like Aisuru, Mirai quickly outcompeted all other DDoS botnets in its heyday, and obliterated previous DDoS attack records with a 620 gigabit-per-second siege that sidelined this website for nearly four days in 2016.

The Mirai botmasters likewise used their crime machine to attack mostly Minecraft servers, but with the goal of forcing Minecraft server owners to purchase a DDoS protection service that they controlled. In addition, they rented out slices of the Mirai botnet to paying customers, some of whom used it to mask the sources of other types of cybercrime, such as click fraud.

Dobbins said Aisuru’s owners also appear to be renting out their botnet as a distributed proxy network that cybercriminal customers anywhere in the world can use to anonymize their malicious traffic and make it appear to be coming from regular residential users in the U.S.

“The people who operate this botnet are also selling (it as) residential proxies,” he said. “And that’s being used to reflect application layer attacks through the proxies on the bots as well.”

The Aisuru botnet harkens back to its predecessor Mirai in another intriguing way. One of its owners is using the Telegram handle “9gigsofram,” which corresponds to the nickname used by the co-owner of a Minecraft server protection service called Proxypipe that was heavily targeted in 2016 by the original Mirai botmasters.

Robert Coelho co-ran Proxypipe back then along with his business partner Erik “9gigsofram” Buckingham, and has spent the past nine years fine-tuning various DDoS mitigation companies that cater to Minecraft server operators and other gaming enthusiasts. Coelho said he has no idea why one of Aisuru’s botmasters chose Buckingham’s nickname, but added that it might say something about how long this person has been involved in the DDoS-for-hire industry.

“The Aisuru attacks on the gaming networks these past seven day have been absolutely huge, and you can see tons of providers going down multiple times a day,” Coelho said.

Coelho said the 15 Tbps attack this week against TCPShield was likely only a portion of the total attack volume hurled by Aisuru at the time, because much of it would have been shoved through networks that simply couldn’t process that volume of traffic all at once. Such outsized attacks, he said, are becoming increasingly difficult and expensive to mitigate.

“It’s definitely at the point now where you need to be spending at least a million dollars a month just to have the network capacity to be able to deal with these attacks,” he said.

RAPID SPREAD

Aisuru has long been rumored to use multiple zero-day vulnerabilities in IoT devices to aid its rapid growth over the past year. XLab, the Chinese security company that was the first to profile Aisuru’s rise in 2024, warned last month that one of the Aisuru botmasters had compromised the firmware distribution website for Totolink, a maker of low-cost routers and other networking gear.

“Multiple sources indicate the group allegedly compromised a router firmware update server in April and distributed malicious scripts to expand the botnet,” XLab wrote on September 15. “The node count is currently reported to be around 300,000.”

Aisuru’s operators received an unexpected boost to their crime machine in August when the U.S. Department Justice charged the alleged proprietor of Rapper Bot, a DDoS-for-hire botnet that competed directly with Aisuru for control over the global pool of vulnerable IoT systems.

Once Rapper Bot was dismantled, Aisuru’s curators moved quickly to commandeer vulnerable IoT devices that were suddenly set adrift by the government’s takedown, Dobbins said.

“Folks were arrested and Rapper Bot control servers were seized and that’s great, but unfortunately the botnet’s attack assets were then pieced out by the remaining botnets,” he said. “The problem is, even if those infected IoT devices are rebooted and cleaned up, they will still get re-compromised by something else generally within minutes of being plugged back in.”

BOTMASTERS AT LARGE

XLab’s September blog post cited multiple unnamed sources saying Aisuru is operated by three cybercriminals: “Snow,” who’s responsible for botnet development; “Tom,” tasked with finding new vulnerabilities; and “Forky,” responsible for botnet sales.

KrebsOnSecurity interviewed Forky in our May 2025 story about the record 6.3 Tbps attack from Aisuru. That story identified Forky as a 21-year-old man from Sao Paulo, Brazil who has been extremely active in the DDoS-for-hire scene since at least 2022. The FBI has seized Forky’s DDoS-for-hire domains several times over the years.

Like the original Mirai botmasters, Forky also operates a DDoS mitigation service called Botshield. Forky declined to discuss the makeup of his ISP’s clientele, or to clarify whether Botshield was more of a hosting provider or a DDoS mitigation firm. However, Forky has posted on Telegram about Botshield successfully mitigating large DDoS attacks launched against other DDoS-for-hire services.

In our previous interview, Forky acknowledged being involved in the development and marketing of Aisuru, but denied participating in attacks launched by the botnet.

Reached for comment earlier this month, Forky continued to maintain his innocence, claiming that he also is still trying to figure out who the current Aisuru botnet operators are in real life (Forky said the same thing in our May interview).

But after a week of promising juicy details, Forky came up empty-handed once again. Suspecting that Forky was merely being coy, I asked him how someone so connected to the DDoS-for-hire world could still be mystified on this point, and suggested that his inability or unwillingness to blame anyone else for Aisuru would not exactly help his case.

At this, Forky verbally bristled at being pressed for more details, and abruptly terminated our interview.

“I’m not here to be threatened with ignorance because you are stressed,” Forky replied. “They’re blaming me for those new attacks. Pretty much the whole world (is) due to your blog.”

Hacker in Snowflake Extortions May Be a U.S. Soldier

Two men have been arrested for allegedly stealing data from and extorting dozens of companies that used the cloud data storage company Snowflake, but a third suspect — a prolific hacker known as Kiberphant0m — remains at large and continues to publicly extort victims. However, this person’s identity may not remain a secret for long: A careful review of Kiberphant0m’s daily chats across multiple cybercrime personas suggests they are a U.S. Army soldier who is or was recently stationed in South Korea.

Kiberphant0m’s identities on cybercrime forums and on Telegram and Discord chat channels have been selling data stolen from customers of the cloud data storage company Snowflake. At the end of 2023, malicious hackers discovered that many companies had uploaded huge volumes of sensitive customer data to Snowflake accounts that were protected with nothing more than a username and password (no multi-factor authentication required).

After scouring darknet markets for stolen Snowflake account credentials, the hackers began raiding the data storage repositories for some of the world’s largest corporations. Among those was AT&T, which disclosed in July that cybercriminals had stolen personal information, phone and text message records for roughly 110 million people.  Wired.com reported in July that AT&T paid a hacker $370,000 to delete stolen phone records.

On October 30, Canadian authorities arrested Alexander Moucka, a.k.a. Connor Riley Moucka of Kitchener, Ontario, on a provisional arrest warrant from the United States, which has since indicted him on 20 criminal counts connected to the Snowflake breaches. Another suspect in the Snowflake hacks, John Erin Binns, is an American who is currently incarcerated in Turkey.

Investigators say Moucka, who went by the handles Judische and Waifu, had tasked Kiberphant0m with selling data stolen from Snowflake customers who refused to pay a ransom to have their information deleted. Immediately after news broke of Moucka’s arrest, Kiberphant0m was clearly furious, and posted on the hacker community BreachForums what they claimed were the AT&T call logs for President-elect Donald J. Trump and for Vice President Kamala Harris.

“In the event you do not reach out to us @ATNT all presidential government call logs will be leaked,” Kiberphant0m threatened, signing their post with multiple “#FREEWAIFU” tags. “You don’t think we don’t have plans in the event of an arrest? Think again.”

On the same day, Kiberphant0m posted what they claimed was the “data schema” from the U.S. National Security Agency.

“This was obtained from the ATNT Snowflake hack which is why ATNT paid an extortion,” Kiberphant0m wrote in a thread on BreachForums. “Why would ATNT pay Waifu for the data when they wouldn’t even pay an extortion for over 20M+ SSNs?”

Also on Nov. 5, Kiberphant0m offered call logs stolen from Verizon’s push-to-talk (PTT) customers — mainly U.S. government agencies and emergency first responders. On Nov. 9, Kiberphant0m posted a sales thread on BreachForums offering a “SIM-swapping” service targeting Verizon PTT customers. In a SIM-swap, fraudsters use credentials that are phished or stolen from mobile phone company employees to divert a target’s phone calls and text messages to a device they control.

MEET ‘BUTTHOLIO’

Kiberphant0m joined BreachForums in January 2024, but their public utterances on Discord and Telegram channels date back to at least early 2022. On their first post to BreachForums, Kiberphant0m said they could be reached at the Telegram handle @cyb3rph4nt0m.

A review of @cyb3rph4nt0m shows this user has posted more than 4,200 messages since January 2024. Many of these messages were attempts to recruit people who could be hired to deploy a piece of malware that enslaved host machines in an Internet of Things (IoT) botnet.

On BreachForums, Kiberphant0m has sold the source code to “Shi-Bot,” a custom Linux DDoS botnet based on the Mirai malware. Kiberphant0m had few sales threads on BreachForums prior to the Snowflake attacks becoming public in May, and many of those involved databases stolen from companies in South Korea.

On June 5, 2024, a Telegram user by the name “Buttholio” joined the fraud-focused Telegram channel “Comgirl” and claimed to be Kiberphant0m. Buttholio made the claim after being taunted as a nobody by another denizen of Comgirl, referring to their @cyb3rph4nt0m account on Telegram and the Kiberphant0m user on cybercrime forums.

“Type ‘kiberphant0m’ on google with the quotes,” Buttholio told another user. “I’ll wait. Go ahead. Over 50 articles. 15+ telecoms breached. I got the IMSI number to every single person that’s ever registered in Verizon, Tmobile, ATNT and Verifone.”

On Sept. 17, 2023, Buttholio posted in a Discord chat room dedicated to players of the video game Escape from Tarkov. “Come to Korea, servers there is pretty much no extract camper or cheater,” Buttholio advised.

In another message that same day in the gaming Discord, Buttholio told others they bought the game in the United States, but that they were playing it in Asia.

“USA is where the game was purchased from, server location is actual in game servers u play on. I am a u.s. soldier so i bought it in the states but got on rotation so i have to use asian servers,” they shared.

‘REVERSESHELL’

The account @Kiberphant0m was assigned the Telegram ID number 6953392511. A review of this ID at the cyber intelligence platform Flashpoint shows that on January 4, 2024 Kibertphant0m posted to the Telegram channel “Dstat,” which is populated by cybercriminals involved in launching distributed denial-of-service (DDoS) attacks and selling DDoS-for-hire services [Full disclosure: Flashpoint is currently an advertiser on this website].

Immediately after Kiberphant0m logged on to the Dstat channel, another user wrote “hi buttholio,” to which Kiberphant0m replied with an affirmative greeting “wsg,” or “what’s good.” On Nov. 1, Dstat’s website dstat[.]cc was seized as part of “Operation PowerOFF,” an international law enforcement action against DDoS services.

Flashpoint’s data shows that @kiberphant0m told a fellow member of Dstat on April 10, 2024 that their alternate Telegram username was “@reverseshell,” and did the same two weeks later in the Telegram chat The Jacuzzi. The Telegram ID for this account is 5408575119.

Way back on Nov. 15, 2022, @reverseshell told a fellow member of a Telegram channel called Cecilio Chat that they were a soldier in the U.S. Army. This user also shared the following image of someone pictured waist-down in military fatigues, with a camouflaged backpack at their feet:

In September 2022, Reverseshell was embroiled in an argument with another member who had threatened to launch a DDoS attack against Reverseshell’s Internet address. After the promised attack materialized, Reverseshell responded, “Yall just hit military base contracted wifi.”

In a chat from October 2022, Reverseshell was bragging about the speed of the servers they were using, and in reply to another member’s question said that they were accessing the Internet via South Korea Telecom.

Telegram chat logs archived by Flashpoint show that on Aug. 23, 2022, Reverseshell bragged they’d been using automated tools to find valid logins for Internet servers that they resold to others.

“I’ve hit US gov servers with default creds,” Reverseshell wrote, referring to systems with easy-to-guess usernames and/or passwords. “Telecom control servers, machinery shops, Russian ISP servers, etc. I sold a few big companies for like $2-3k a piece. You can sell the access when you get a big SSH into corporation.”

On July 29, 2023, Reverseshell posted a screenshot of a login page for a major U.S. defense contractor, claiming they had an aerospace company’s credentials to sell.

PROMAN AND VARS_SECC

Flashpoint finds the Telegram ID 5408575119 has used several aliases since 2022, including Reverseshell and Proman557.

A search on the username Proman557 at the cyber intelligence platform Intel 471 shows that a hacker by the name “Proman554” registered on Hackforums in September 2022, and in messages to other users Proman554 said they can be reached at the Telegram account Buttholio.

Intel 471 also finds the Proman557 moniker is one of many used by a person on the Russian-language hacking forum Exploit in 2022 who sold a variety of Linux-based botnet malware.

Proman557 was eventually banned — allegedly for scamming a fellow member out of $350 — and the Exploit moderator warned forum users that Proman557 had previously registered under several other nicknames, including an account called “Vars_Secc.”

Vars_Secc’s thousands of comments on Telegram over two years show this user divided their time between online gaming, maintaining a DDoS botnet, and promoting the sale or renting of their botnets to other users.

“I use ddos for many things not just to be a skid,” Vars_Secc pronounced. “Why do you think I haven’t sold my net?” They then proceeded to list the most useful qualities of their botnet:

-I use it to hit off servers that ban me or piss me off
-I used to ddos certain games to get my items back since the data reverts to when u joined
-I use it for server side desync RCE vulnerabilities
-I use it to sometimes ransom
-I use it when bored as a source of entertainment

Flashpoint shows that in June 2023, Vars_Secc responded to taunting from a fellow member in the Telegram channel SecHub who had threatened to reveal their personal details to the federal government for a reward.

“Man I’ve been doing this shit for 4 years,” Vars_Secc replied nonchalantly. “I highly doubt the government is going to pay millions of dollars for data on some random dude operating a pointless ddos botnet and finding a few vulnerabilities here and there.”

For several months in 2023, Vars_Secc also was an active member of the Russian-language crime forum XSS, where they sold access to a U.S. government server for $2,000. However, Vars_Secc would be banned from XSS after attempting to sell access to the Russian telecommunications giant Rostelecom. [In this, Vars_Secc violated the Number One Rule for operating on a Russia-based crime forum: Never offer to hack or sell data stolen from Russian entities or citizens].

On June 20, 2023, Vars_Secc posted a sales thread on the cybercrime forum Ramp 2.0 titled, “Selling US Gov Financial Access.”

“Server within the network, possible to pivot,” Vars_Secc’s sparse sales post read. “Has 3-5 subroutes connected to it. Price $1,250. Telegram: Vars_Secc.”

Vars_Secc also used Ramp in June 2023 to sell access to a “Vietnam government Internet Network Information Center.”

“Selling access server allocated within the network,” Vars_Secc wrote. “Has some data on it. $500.”

BUG BOUNTIES

The Vars_Secc identity claimed on Telegram in May 2023 that they made money by submitting reports about software flaws to HackerOne, a company that helps technology firms field reports about security vulnerabilities in their products and services. Specifically, Vars_Secc said they had earned financial rewards or “bug bounties” from reddit.com, the U.S. Department of Defense, and Coinbase, among 30 others.

“I make money off bug bounties, it’s quite simple,” Vars_Secc said when asked what they do for a living. “That’s why I have over 30 bug bounty reports on HackerOne.”

A month before that, Vars_Secc said they’d found a vulnerability in reddit.com.

“I poisoned Reddit’s cache,” they explained. “I’m going to exploit it further, then report it to reddit.”

KrebsOnSecurity sought comment from HackerOne, which said it would investigate the claims. This story will be updated if they respond.

The Vars_Secc telegram handle also has claimed ownership of the BreachForums member “Boxfan,” and Intel 471 shows Boxfan’s early posts on the forum had the Vars_Secc Telegram account in their signature. In their most recent post to BreachForums in January 2024, Boxfan disclosed a security vulnerability they found in Naver, the most popular search engine in South Korea (according to statista.com). Boxfan’s comments suggest they have strong negative feelings about South Korean culture.

“Have fun exploiting this vulnerability,” Boxfan wrote on BreachForums, after pasting a long string of computer code intended to demonstrate the flaw. “Fuck you South Korea and your discriminatory views. Nobody likes ur shit kpop you evil fucks. Whoever can dump this DB [database] congrats. I don’t feel like doing it so I’ll post it to the forum.”

The many identities tied to Kiberphant0m strongly suggest they are or until recently were a U.S. Army soldier stationed in South Korea. Kiberphant0m’s alter egos never mentioned their military rank, regiment, or specialization.

However, it is likely that Kiberphant0m’s facility with computers and networking was noticed by the Army. According to the U.S. Army’s website, the bulk of its forces in South Korea reside within the Eighth Army, which has a dedicated cyber operations unit focused on defending against cyber threats.

On April 1, 2023, Vars_Secc posted to a public Telegram chat channel a screenshot of the National Security Agency’s website. The image indicated the visitor had just applied for some type of job at the NSA.

The NSA has not yet responded to requests for comment.

Reached via Telegram, Kiberphant0m acknowledged that KrebsOnSecurity managed to unearth their old handles.

“I see you found the IP behind it no way,” Kiberphant0m replied. “I see you managed to find my old aliases LOL.”

Kiberphant0m denied being in the U.S. Army or ever being in South Korea, and said all of that was a lengthy ruse designed to create a fictitious persona. “Epic opsec troll,” they claimed.

Asked if they were at all concerned about getting busted, Kiberphant0m called that an impossibility.

“I literally can’t get caught,” Kiberphant0m said, declining an invitation to explain why. “I don’t even live in the USA Mr. Krebs.”

Below is a mind map that hopefully helps illustrate some of the connections between and among Kiberphant0m’s apparent alter egos.

KrebsOnSecurity would like to extend a special note of thanks to the New York City based security intelligence firm Unit 221B for their assistance in helping to piece together key elements of Kiberphant0m’s different identities.

Canadian Man Arrested in Snowflake Data Extortions

A 25-year-old man in Ontario, Canada has been arrested for allegedly stealing data from and extorting more than 160 companies that used the cloud data service Snowflake.

On October 30, Canadian authorities arrested Alexander Moucka, a.k.a. Connor Riley Moucka of Kitchener, Ontario, on a provisional arrest warrant from the United States. Bloomberg first reported Moucka’s alleged ties to the Snowflake hacks on Monday.

At the end of 2023, malicious hackers learned that many large companies had uploaded huge volumes of sensitive customer data to Snowflake accounts that were protected with little more than a username and password (no multi-factor authentication required). After scouring darknet markets for stolen Snowflake account credentials, the hackers began raiding the data storage repositories used by some of the world’s largest corporations.

Among those was AT&T, which disclosed in July that cybercriminals had stolen personal information and phone and text message records for roughly 110 million people — nearly all of its customers. Wired.com reported in July that AT&T paid a hacker $370,000 to delete stolen phone records.

A report on the extortion attacks from the incident response firm Mandiant notes that Snowflake victim companies were privately approached by the hackers, who demanded a ransom in exchange for a promise not to sell or leak the stolen data. All told, more than 160 Snowflake customers were relieved of data, including TicketMaster, Lending Tree, Advance Auto Parts and Neiman Marcus.

Moucka is alleged to have used the hacker handles Judische and Waifu, among many others. These monikers correspond to a prolific cybercriminal whose exploits were the subject of a recent story published here about the overlap between Western, English-speaking cybercriminals and extremist groups that harass and extort minors into harming themselves or others.

On May 2, 2024, Judische claimed on the fraud-focused Telegram channel Star Chat that they had hacked Santander Bank, one of the first known Snowflake victims. Judische would repeat that claim in Star Chat on May 13 — the day before Santander publicly disclosed a data breach — and would periodically blurt out the names of other Snowflake victims before their data even went up for sale on the cybercrime forums.

404 Media reports that at a court hearing in Ontario this morning, Moucka called in from a prison phone and said he was seeking legal aid to hire an attorney.

TELECOM DOMINOES

Mandiant has attributed the Snowflake compromises to a group it calls “UNC5537,” with members based in North America and Turkey. Sources close to the investigation tell KrebsOnSecurity the UNC5537 member in Turkey is John Erin Binns, an elusive American man indicted by the U.S. Department of Justice (DOJ) for a 2021 breach at T-Mobile that exposed the personal information of at least 76.6 million customers.

Update: The Justice Department has unsealed an indictment (PDF) against Moucka and Binns, charging them with one count of conspiracy; 10 counts of wire fraud; four counts of computer fraud and abuse; two counts of extortion in relation to computer fraud; and two counts aggravated identity theft.

In a statement on Moucka’s arrest, Mandiant said UNC5537 aka Alexander ‘Connor’ Moucka has proven to be one of the most consequential threat actors of 2024.

“In April 2024, UNC5537 launched a campaign, systematically compromising misconfigured SaaS instances across over a hundred organizations,” wrote Austin Larsen, Mandiant’s senior threat analyst. “The operation, which left organizations reeling from significant data loss and extortion attempts, highlighted the alarming scale of harm an individual can cause using off-the-shelf tools.”

Sources involved in the investigation said UNC5537 has focused on hacking into telecommunications companies around the world. Those sources told KrebsOnSecurity that Binns and Judische are suspected of stealing data from India’s largest state-run telecommunications firm Bharat Sanchar Nigam Ltd (BNSL), and that the duo even bragged about being able to intercept or divert phone calls and text messages for a large portion of the population of India.

Judische appears to have outsourced the sale of databases from victim companies who refuse to pay, delegating some of that work to a cybercriminal who uses the nickname Kiberphant0m on multiple forums. In late May 2024, Kiberphant0m began advertising the sale of hundreds of gigabytes of data stolen from BSNL.

“Information is worth several million dollars but I’m selling for pretty cheap,” Kiberphant0m wrote of the BSNL data in a post on the English-language cybercrime community Breach Forums. “Negotiate a deal in Telegram.”

Also in May 2024, Kiberphant0m took to the Russian-language hacking forum XSS to sell more than 250 gigabytes of data stolen from an unnamed mobile telecom provider in Asia, including a database of all active customers and software allowing the sending of text messages to all customers.

On September 3, 2024, Kiberphant0m posted a sales thread on XSS titled “Selling American Telecom Access (100B+ Revenue).” Kiberphant0m’s asking price of $200,000 was apparently too high because they reposted the sales thread on Breach Forums a month later, with a headline that more clearly explained the data was stolen from Verizon‘s “push-to-talk” (PTT) customers — primarily U.S. government agencies and first responders.

404Media reported recently that the breach does not appear to impact the main consumer Verizon network. Rather, the hackers broke into a third party provider and stole data on Verizon’s PTT systems, which are a separate product marketed towards public sector agencies, enterprises, and small businesses to communicate internally.

INTERVIEW WITH JUDISCHE

Investigators say Moucka shared a home in Kitchener with other tenants, but not his family. His mother was born in Chechnya, and he speaks Russian in addition to French and English. Moucka’s father died of a drug overdose at age 26, when the defendant was roughly five years old.

A person claiming to be Judische began communicating with this author more than three months ago on Signal after KrebsOnSecurity started asking around about hacker nicknames previously used by Judische over the years.

Judische admitted to stealing and ransoming data from Snowflake customers, but he said he’s not interested in selling the information, and that others have done this with some of the data sets he stole.

“I’m not really someone that sells data unless it’s crypto [databases] or credit cards because they’re the only thing I can find buyers for that actually have money for the data,” Judische told KrebsOnSecurity. “The rest is just ransom.”

Judische has sent this reporter dozens of unsolicited and often profane messages from several different Signal accounts, all of which claimed to be an anonymous tipster sharing different identifying details for Judische. This appears to have been an elaborate effort by Judische to “detrace” his movements online and muddy the waters about his identity.

Judische frequently claimed he had unparalleled “opsec” or operational security, a term that refers to the ability to compartmentalize and obfuscate one’s tracks online. In an effort to show he was one step ahead of investigators, Judische shared information indicating someone had given him a Mandiant researcher’s assessment of who and where they thought he was. Mandiant says those were discussion points shared with select reporters in advance of the researcher’s recent talk at the LabsCon security conference.

But in a conversation with KrebsOnSecurity on October 26, Judische acknowledged it was likely that the authorities were closing in on him, and said he would seriously answer certain questions about his personal life.

“They’re coming after me for sure,” he said.

In several previous conversations, Judische referenced suffering from an unspecified personality disorder, and when pressed said he has a condition called “schizotypal personality disorder” (STPD).

According to the Cleveland Clinic, schizotypal personality disorder is marked by a consistent pattern of intense discomfort with relationships and social interactions: “People with STPD have unusual thoughts, speech and behaviors, which usually hinder their ability to form and maintain relationships.”

Judische said he was prescribed medication for his psychological issues, but that he doesn’t take his meds. Which might explain why he never leaves his home.

“I never go outside,” Judische allowed. “I’ve never had a friend or true relationship not online nor in person. I see people as vehicles to achieve my ends no matter how friendly I may seem on the surface, which you can see by how fast I discard people who are loyal or [that] I’ve known a long time.”

Judische later admitted he doesn’t have an official STPD diagnosis from a physician, but said he knows that he exhibits all the signs of someone with this condition.

“I can’t actually get diagnosed with that either,” Judische shared. “Most countries put you on lists and restrict you from certain things if you have it.”

Asked whether he has always lived at his current residence, Judische replied that he had to leave his hometown for his own safety.

“I can’t live safely where I’m from without getting robbed or arrested,” he said, without offering more details.

A source familiar with the investigation said Moucka previously lived in Quebec, which he allegedly fled after being charged with harassing others on the social network Discord.

Judische claims to have made at least $4 million in his Snowflake extortions. Judische said he and others frequently targeted business process outsourcing (BPO) companies, staffing firms that handle customer service for a wide range of organizations. They also went after managed service providers (MSPs) that oversee IT support and security for multiple companies, he claimed.

“Snowflake isn’t even the biggest BPO/MSP multi-company dataset on our networks, but what’s been exfiltrated from them is well over 100TB,” Judische bragged. “Only ones that don’t pay get disclosed (unless they disclose it themselves). A lot of them don’t even do their SEC filing and just pay us to fuck off.”

INTEL SECRETS

The other half of UNC5537 — 24-year-old John Erin Binns — was arrested in Turkey in late May 2024, and currently resides in a Turkish prison. However, it is unclear if Binns faces any immediate threat of extradition to the United States, where he is currently wanted on criminal hacking charges tied to the 2021 breach at T-Mobile.

A person familiar with the investigation said Binns’s application for Turkish citizenship was inexplicably approved after his incarceration, leading to speculation that Binns may have bought his way out of a sticky legal situation.

Under the Turkish constitution, a Turkish citizen cannot be extradited to a foreign state. Turkey has been criticized for its “golden passport” program, which provides citizenship and sanctuary for anyone willing to pay several hundred thousand dollars.

Binns’s alleged hacker alter egos — “IRDev” and “IntelSecrets” — were at once feared and revered on several cybercrime-focused Telegram communities, because he was known to possess a powerful weapon: A massive botnet. From reviewing the Telegram channels Binns frequented, we can see that others in those communities — including Judische — heavily relied on Binns and his botnet for a variety of cybercriminal purposes.

The IntelSecrets nickname corresponds to an individual who has claimed responsibility for modifying the source code for the Mirai “Internet of Things” botnet to create a variant known as “Satori,” and supplying it to others who used it for criminal gain and were later caught and prosecuted.

Since 2020, Binns has filed a flood of lawsuits naming various federal law enforcement officers and agencies — including the FBI, the CIA, and the U.S. Special Operations Command (PDF), demanding that the government turn over information collected about him and seeking restitution for his alleged kidnapping at the hands of the CIA.

Binns claims he was kidnapped in Turkey and subjected to various forms of psychological and physical torture. According to Binns, the U.S. Central Intelligence Agency (CIA) falsely told their counterparts in Turkey that he was a supporter or member of the Islamic State (ISIS), a claim he says led to his detention and torture by the Turkish authorities.

However, in a 2020 lawsuit he filed against the CIA, Binns himself acknowledged having visited a previously ISIS-controlled area of Syria prior to moving to Turkey in 2017.

Sources familiar with the investigation told KrebsOnSecurity that Binns was so paranoid about possible surveillance on him by American and Turkish intelligence agencies that his erratic behavior and online communications actually brought about the very government snooping that he feared.

In several online chats in late 2023 on Discord, IRDev lamented being lured into a law enforcement sting operation after trying to buy a rocket launcher online. A person close to the investigation confirmed that at the beginning of 2023, IRDev began making earnest inquiries about how to purchase a Stinger, an American-made portable weapon that operates as an infrared surface-to-air missile.

Sources told KrebsOnSecurity Binns’ repeated efforts to purchase the projectile earned him multiple visits from the Turkish authorities, who were justifiably curious why he kept seeking to acquire such a powerful weapon.

WAIFU

A careful study of Judische’s postings on Telegram and Discord since 2019 shows this user is more widely known under the nickname “Waifu,” a moniker that corresponds to one of the more accomplished “SIM swappers” in the English-language cybercrime community over the years.

SIM swapping involves phishing, tricking or bribing mobile phone company employees for credentials needed to redirect a target’s mobile phone number to a device the attackers control — allowing thieves to intercept incoming text messages and phone calls.

Several SIM-swapping channels on Telegram maintain a frequently updated leaderboard of the 100 richest SIM-swappers, as well as the hacker handles associated with specific cybercrime groups (Waifu is ranked #24). That list has long included Waifu on a roster of hackers for a group that called itself “Beige.”

The term “Beige Group” came up in reporting on two stories published here in 2020. The first was in an August 2020 piece called Voice Phishers Targeting Corporate VPNs, which warned that the COVID-19 epidemic had brought a wave of targeted voice phishing attacks that tried to trick work-at-home employees into providing access to their employers’ networks. Frequent targets of the Beige group included employees at numerous top U.S. banks, ISPs, and mobile phone providers.

The second time Beige Group was mentioned by sources was in reporting on a breach at the domain registrar GoDaddy. In November 2020, intruders thought to be associated with the Beige Group tricked a GoDaddy employee into installing malicious software, and with that access they were able to redirect the web and email traffic for multiple cryptocurrency trading platforms. Other frequent targets of the Beige group included employees at numerous top U.S. banks, ISPs, and mobile phone providers.

Judische’s various Telegram identities have long claimed involvement in the 2020 GoDaddy breach, and he didn’t deny his alleged role when asked directly. Judische said he prefers voice phishing or “vishing” attacks that result in the target installing data-stealing malware, as opposed to tricking the user into entering their username, password and one-time code.

“Most of my ops involve malware [because] credential access burns too fast,” Judische explained.

CRACKDOWN ON HARM GROUPS?

The Telegram channels that the Judische/Waifu accounts frequented over the years show this user divided their time between posting in channels dedicated to financial cybercrime, and harassing and stalking others in harm communities like Leak Society and Court.

Both of these Telegram communities are known for victimizing children through coordinated online campaigns of extortion, doxing, swatting and harassment. People affiliated with harm groups like Court and Leak Society will often recruit new members by lurking on gaming platforms, social media sites and mobile applications that are popular with young people, including Discord, Minecraft, Roblox, Steam, Telegram, and Twitch.

“This type of offence usually starts with a direct message through gaming platforms and can move to more private chatrooms on other virtual platforms, typically one with video enabled features, where the conversation quickly becomes sexualized or violent,” warns a recent alert from the Royal Canadian Mounted Police (RCMP) about the rise of sextortion groups on social media channels.

“One of the tactics being used by these actors is sextortion, however, they are not using it to extract money or for sexual gratification,” the RCMP continued. “Instead they use it to further manipulate and control victims to produce more harmful and violent content as part of their ideological objectives and radicalization pathway.”

Some of the largest such known groups include those that go by the names 764, CVLT, Kaskar, 7997, 8884, 2992, 6996, 555, Slit Town, 545, 404, NMK, 303, and H3ll.

On the various cybercrime-oriented channels Judische frequented, he often lied about his or others’ involvement in various breaches. But Judische also at times shared nuggets of truth about his past, particularly when discussing the early history and membership of specific Telegram- and Discord-based cybercrime and harm groups.

Judische claimed in multiple chats, including on Leak Society and Court, that they were an early member of the Atomwaffen Division (AWD), a white supremacy group whose members are suspected of having committed multiple murders in the U.S. since 2017.

In 2019, KrebsOnSecurity exposed how a loose-knit group of neo-Nazis, some of whom were affiliated with AWD, had doxed and/or swatted nearly three dozen journalists at a range of media publications. Swatting involves communicating a false police report of a bomb threat or hostage situation and tricking authorities into sending a heavily armed police response to a targeted address.

Judsiche also told a fellow denizen of Court that years ago he was active in an older harm community called “RapeLash,” a truly vile Discord server known for attracting Atomwaffen members. A 2018 retrospective on RapeLash posted to the now defunct neo-Nazi forum Fascist Forge explains that RapeLash was awash in gory, violent images and child pornography.

A Fascist Forge member named “Huddy” recalled that RapeLash was the third incarnation of an extremist community also known as “FashWave,” short for Fascist Wave.

“I have no real knowledge of what happened with the intermediary phase known as ‘FashWave 2.0,’ but FashWave 3.0 houses multiple known Satanists and other degenerates connected with AWD, one of which got arrested on possession of child pornography charges, last I heard,” Huddy shared.

In June 2024, a Mandiant employee told Bloomberg that UNC5537 members have made death threats against cybersecurity experts investigating the hackers, and that in one case the group used artificial intelligence to create fake nude photos of a researcher to harass them.

Allison Nixon is chief research officer with the New York-based cybersecurity firm Unit 221B. Nixon is among several researchers who have faced harassment and specific threats of physical violence from Judische.

Nixon said Judische is likely to argue in court that his self-described psychological disorder(s) should somehow excuse his long career in cybercrime and in harming others.

“They ran a misinformation campaign in a sloppy attempt to cover up the hacking campaign,” Nixon said of Judische. “Coverups are an acknowledgment of guilt, which will undermine a mental illness defense in court. We expect that violent hackers from the [cybercrime community] will experience increasingly harsh sentences as the crackdown continues.”

5:34 p.m. ET: Updated story to include a clarification from Mandiant. Corrected Moucka’s age.

Nov. 21, 2024: Included link to a criminal indictment against Moucka and Binns.

FCC Fines Major U.S. Wireless Carriers for Selling Customer Location Data

The U.S. Federal Communications Commission (FCC) today levied fines totaling nearly $200 million against the four major carriers — including AT&T, Sprint, T-Mobile and Verizon — for illegally sharing access to customers’ location information without consent.

The fines mark the culmination of a more than four-year investigation into the actions of the major carriers. In February 2020, the FCC put all four wireless providers on notice that their practices of sharing access to customer location data were likely violating the law.

The FCC said it found the carriers each sold access to its customers’ location information to ‘aggregators,’ who then resold access to the information to third-party location-based service providers.

“In doing so, each carrier attempted to offload its obligations to obtain customer consent onto downstream recipients of location information, which in many instances meant that no valid customer consent was obtained,” an FCC statement on the action reads. “This initial failure was compounded when, after becoming aware that their safeguards were ineffective, the carriers continued to sell access to location information without taking reasonable measures to protect it from unauthorized access.”

The FCC’s findings against AT&T, for example, show that AT&T sold customer location data directly or indirectly to at least 88 third-party entities. The FCC found Verizon sold access to customer location data (indirectly or directly) to 67 third-party entities. Location data for Sprint customers found its way to 86 third-party entities, and to 75 third-parties in the case of T-Mobile customers.

The commission said it took action after Sen. Ron Wyden (D-Ore.) sent a letter to the FCC detailing how a company called Securus Technologies had been selling location data on customers of virtually any major mobile provider to law enforcement officials.

That same month, KrebsOnSecurity broke the news that LocationSmart — a data aggregation firm working with the major wireless carriers — had a free, unsecured demo of its service online that anyone could abuse to find the near-exact location of virtually any mobile phone in North America.

The carriers promised to “wind down” location data sharing agreements with third-party companies. But in 2019, reporting at Vice.com showed that little had changed, detailing how reporters were able to locate a test phone after paying $300 to a bounty hunter who simply bought the data through a little-known third-party service.

Sen. Wyden said no one who signed up for a cell plan thought they were giving permission for their phone company to sell a detailed record of their movements to anyone with a credit card.

“I applaud the FCC for following through on my investigation and holding these companies accountable for putting customers’ lives and privacy at risk,” Wyden said in a statement today.

The FCC fined Sprint and T-Mobile $12 million and $80 million respectively. AT&T was fined more than $57 million, while Verizon received a $47 million penalty. Still, these fines represent a tiny fraction of each carrier’s annual revenues. For example, $47 million is less than one percent of Verizon’s total wireless service revenue in 2023, which was nearly $77 billion.

The fine amounts vary because they were calculated based in part on the number of days that the carriers continued sharing customer location data after being notified that doing so was illegal (the agency also considered the number of active third-party location data sharing agreements). The FCC notes that AT&T and Verizon each took more than 320 days from the publication of the Times story to wind down their data sharing agreements; T-Mobile took 275 days; Sprint kept sharing customer location data for 386 days.

Update, 6:25 p.m. ET: Clarified that the FCC launched its investigation at the request of Sen. Wyden.