The U.S. Federal Bureau of Investigation (FBI) on Saturday
confirmed unidentified threat actors have breached one of its email
servers to blast hoax messages about a fake “sophisticated chain
attack.”

The incident, which was first publicly disclosed[1]
by threat intelligence non-profit SpamHaus, involved sending rogue
warning emails with the subject line “Urgent: Threat actor in
systems” originating from a legitimate FBI email address
“eims@ic.fbi[.]gov” that framed the attack on Vinny Troia, a
security researcher and founder of dark web intelligence firms
Night Lion Security and Shadowbyte, while also claiming him to be
affiliated with a hacking outfit named TheDarkOverlord.

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SpamHaus cited its own telemetry data to point out that the
email blasts happened over two “spam” waves, one shortly before
5:00 a.m. UTC and another one shortly after 7:00 a.m. UTC.

However, according to Kryptos Logic researcher Marcus Hutchins,
the goal appears to be to discredit Troia. “Vinny Troia wrote a
book revealing information about hacking group TheDarkOverlord.
Shortly after, someone began erasing ElasticSearch clusters leaving
behind his name. Later his Twitter was hacked, then his website.
Now a hacked FBI email server is sending this,” Hutchins tweeted[2].

Brian Krebs of Krebs on Security, who also received[3]
an independent missive from the perpetrator, detailed in an
independent report that the “spam messages were sent by abusing
insecure code in an FBI online portal designed to share information
with state and local law enforcement authorities.”

Pompompurin, as the hacker entity[4]
goes by online, told Krebs that the breach was carried out by
taking advantage of a flaw in the FBI’s Law Enforcement Enterprise
Portal (LEEP[5]) that not only allowed
any individual to apply for an account, but also leaked the
one-time password that’s sent to the applicant to confirm their
registration, effectively enabling them to intercept and tamper the
HTTP requests with their own phony message to thousands of email
addresses.

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“The FBI is aware of a software misconfiguration that
temporarily allowed an actor to leverage the Law Enforcement
Enterprise Portal (LEEP) to send fake emails,” the agency said[6]
in a statement. “While the illegitimate email originated from an
FBI operated server, that server was dedicated to pushing
notifications for LEEP and was not part of the FBI’s corporate
email service. No actor was able to access or compromise any data
or PII on the FBI’s network.”

“Should I be flattered that the kids who hacked the FBI email
servers decided to do it in my name?,” Troia later tweeted[7], while also hinting[8]
at Pompompurin being the mastermind of the smear campaign. Earlier
in the day, those in charge of the Twitter account said[9]: “I am not involved in
any illegal activities. Please note that this account is also
operated by [Vinny Troia].”

References

  1. ^
    publicly
    disclosed
    (twitter.com)
  2. ^
    tweeted
    (twitter.com)
  3. ^
    received
    (krebsonsecurity.com)
  4. ^
    hacker entity
    (twitter.com)
  5. ^
    LEEP
    (www.fbi.gov)
  6. ^
    said
    (www.fbi.gov)
  7. ^
    tweeted
    (twitter.com)
  8. ^
    hinting
    (twitter.com)
  9. ^
    said
    (twitter.com)

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