FortiBleed, a credential compromise campaign targeting Fortinet firewalls and VPN gateways, is an ongoing threat that can lock users out of their Fortinet accounts and also lead to ransomware attacks, the FBI and Secret Service said in an alert published Tuesday.
“Affected organizations may find themselves locked out of their systems if threat actors disable accounts or change passwords, requiring remediation steps beyond standard patching and password resets,” the alert states. “In addition, the FortiBleed attack chain has been observed as an initial entry point for ransomware affiliates.”
When it was first uncovered earlier this year, SOCRadar verified more than 86,644 compromised devices across 194 countries. Ensar Seker, chief information security officer of the company, told CyberScoop that “in our later investigation, we identified more than 400,000 or 450,000 firewalls targeted by the wider operation.”
There are different aspects of the operation that make comparisons imprecise over time, but overall the numbers “show the campaign is broader and more serious than we understood at the beginning,” Seker said.
The attackers can disable accounts or change passwords to lock users out with the access they gain, making standard password resets and patching insufficient, the government alert reads.