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Brazilian authorities reportedly have arrested a 33-year-old man on suspicion of being “USDoD,” a prolific cybercriminal who rose to infamy in 2022 after infiltrating the FBI’s InfraGard program and leaking contact information for 80,000 members. More recently, USDoD was behind a breach at the consumer data broker National Public Data that led to the leak of Social Security numbers and other personal information for a significant portion of the U.S. population.
USDoD’s InfraGard sales thread on Breached.
The Brazilian news outlet TV Globo first reported the news of USDoD’s arrest, saying the Federal Police arrested a 33-year-old man from Belo Horizonte. According to TV Globo, USDoD is wanted domestically in connection with the theft of data on Brazilian Federal Police officers.
USDoD was known to use the hacker handles “Equation Corp” and “NetSec,” and according to the cyber intelligence platform Intel 471 NetSec posted a thread on the now-defunct cybercrime community RaidForums on Feb. 22, 2022, in which they offered the email address and password for 659 members of the Brazilian Federal Police.
TV Globo didn’t name the man arrested, but the Portuguese tech news outlet Tecmundo published a report in August 2024 that named USDoD as 33-year-old Luan BG from Minas Gerais, Brazil. Techmundo said it learned the hacker’s real identity after being given a draft of a detailed, non-public report produced by the security firm CrowdStrike.
CrowdStrike did not respond to a request for comment. But a week after Techmundo’s piece, the tech news publication hackread.com published a story in which USDoD reportedly admitted that CrowdStrike was accurate in identifying him. Hackread said USDoD shared a statement, which was partially addressed to CrowdStrike:
A recent statement by USDoD, after he was successfully doxed by CrowdStrike and other security firms. Image: Hackread.com.
In August 2024, a cybercriminal began selling Social Security numbers and other personal information stolen from National Public Data, a private data broker in Florida that collected and sold SSNs and contact data for a significant slice of the American population.
Additional reporting revealed National Public Data had inadvertently published its own passwords on the Internet. The company is now the target of multiple class-action lawsuits, and recently declared bankruptcy. In an interview with KrebsOnSecurity, USDoD acknowledged stealing the NPD data earlier this year, but claimed he was not involved in leaking or selling it.
In December 2022, KrebsOnSecurity broke the news that USDoD had social-engineered his way into the FBI’s InfraGard program, an FBI initiative designed to build informal information sharing partnerships with vetted professionals in the private sector concerning cyber and physical threats to critical U.S. national infrastructure.
USDoD applied for InfraGard membership using the identity of the CEO of a major U.S. financial company. Even though USDoD listed the real mobile phone number of the CEO, the FBI apparently never reached the CEO to validate his application, because the request was granted just a few weeks later. After that, USDoD said he used a simple program to collect all of the contact information shared by more than 80,000 InfraGard members.
The FBI declined to comment on reports about USDoD’s arrest.
In a lengthy September 2023 interview with databreaches.net, USDoD told the publication he was a man in his mid-30s who was born in South America and who holds dual citizenship in Brazil and Portugal. Toward the end of that interview, USDoD said they were planning to launch a platform for acquiring military intelligence from the United States.
Databreaches.net told KrebsOnSecurity USDoD has been a regular correspondent since that 2023 interview, and that after being doxed USDoD made inquiries with a local attorney to learn if there were any open investigations or charges against him.
“From what the lawyer found out from the federal police, they had no open cases or charges against him at that time,” Databreaches.net said. “From his writing to me and the conversations we had, my sense is he had absolutely no idea he was in imminent danger of being arrested.”
When KrebsOnSecurity last communicated with USDoD via Telegram on Aug. 15, 2024, they claimed they were “planning to retire and move on from this,” referring to multiple media reports that blamed USDoD for leaking nearly three billion consumer records from National Public Data.
Less than four days later, however, USDoD was back on his normal haunt at BreachForums, posting custom exploit code he claimed to have written to attack recently patched vulnerabilities in a popular theme made for WordPress websites.
Three men in the United Kingdom have pleaded guilty to operating otp[.]agency, a once popular online service that helped attackers intercept the one-time passcodes (OTPs) that many websites require as a second authentication factor in addition to passwords.
Launched in November 2019, OTP Agency was a service for intercepting one-time passcodes needed to log in to various websites. Scammers who had already stolen someone’s bank account credentials could enter the target’s phone number and name, and the service would initiate an automated phone call to the target that warned them about unauthorized activity on their account.
The call would prompt the target to enter a one-time passcode that was sent to the user via SMS when the thieves attempted to log in. Any codes shared by the target were then relayed to the scammer’s user panel at the OTP Agency website.
A statement published Aug. 30 by the U.K.’s National Crime Agency (NCA) said three men pleaded guilty to running OTP Agency: Callum Picari, 22, from Hornchurch, Essex; Vijayasidhurshan Vijayanathan, 21, from Aylesbury, Buckinghamshire; and Aza Siddeeque, 19, from Milton Keynes, Buckinghamshire.
KrebsOnSecurity profiled OTP Agency in a February 2021 story about arrests tied to another phishing-related service based in the U.K. Someone claiming to represent OTP Agency then posted several comments on the piece, wherein they claimed the story was libelous and that they were a legitimate anti-fraud service. However, the service’s Telegram channel clearly showed its proprietors had built OTP Agency with one purpose in mind: To help their customers take over online accounts.
Within hours of that publication, OTP Agency shuttered its website and announced it was closing up shop and purging its user database. The NCA said the February 2021 story prompted a panicked message exchange between Picari and Vijayanathan:
Picari said: bro we are in big trouble… U will get me bagged… Bro delete the chat
Vijayanathan: Are you sure
Picari: So much evidence in there
Vijayanathan: Are you 100% sure
Picari: It’s so incriminating…Take a look and search ‘fraud’…Just think of all the evidence…that we cba to find…in the OTP chat…they will find
Vijayanathan: Exactly so if we just shut EVERYTHING down
Picari: They went to our first ever msg…We look incriminating…if we shut down…I say delete the chat…Our chat is Fraud 100%
Vijayanathan : Everyone with a brain will tell you stop it here and move on
Picari: Just because we close it doesn’t mean we didn’t do it…But deleting our chat…Will f*^k their investigations…There’s nothing fraudulent on the site
Despite deleting its Telegram channel, OTP Agency evidently found it difficult to walk away from its customers (and/or the money). Instead of shutting down as Vijayanathan wisely advised, just a few days later OTP Agency was communicating with customers on a new Telegram channel, offering a new login page and assuring existing customers that their usernames, passwords and balances would remain the same.
OTP Agency, immediately after their initial shutdown, telling customers their existing logins will still work.
But that revival would be short-lived. The NCA said the site was taken offline less than a month later when the trio were arrested. NCA investigators said more than 12,500 people were targeted by OTP Agency users during the 18 months the service was active.
Picari was the owner, developer and main beneficiary of the service, and his personal information and ownership of OTP Agency was revealed in February 2020 in a “dox” posted to the now-defunct English-language cybercrime forum Raidforums. The NCA said it began investigating the service in June 2020.
The OTP Agency operators who pleaded guilty to running the service; Aza Siddeeque, Callum Picari, and Vijayasidhurshan Vijayanathan.
OTP Agency might be gone, but several other similar OTP interception services are still in operation and accepting new customers, including a long-running service KrebsOnSecurity profiled in September 2021 called SMSRanger. More on SMSRanger in an upcoming post.
Text messages, emails and phone calls warning recipients about potential fraud are some of the most common scam lures. If someone (or something) calls saying they’re from your bank, or asks you to provide any personal or financial information, do not respond. Just hang up, full stop.
If the call has you worried about the security and integrity of your account, check the account status online, or call your financial institution — ideally using a phone number that came from the bank’s Web site or from the back of your payment card.
Further reading: When in Doubt, Hang Up, Look Up, and Call Back
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