Inside the FortiBleed Open Directory: A Technical Analysis of What the Attacker Left Behind

Reported 19 Jun 2026 by otx · Severity: medium

An exposed attacker server has unveiled FortiBleed, a large-scale credential-compromise campaign targeting internet-facing Fortinet FortiGate firewalls and SSL VPN gateways globally. This operation involved credential harvesting through reuse, brute force, and hash cracking using