SIGNALInfrastructure Software·Jun 22, 2026, 8:01 PMSignal75Short term

FortiBleed campaign used custom FortiGate sniffer to steal credentials

Source: BleepingComputer

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FortiBleed campaign used custom FortiGate sniffer to steal credentials

Security firm SOCRadar says the large-scale FortiBleed campaign targeting Fortinet FortiGate devices used custom sniffers to harvest authentication secrets from compromised firewalls and steal credentials. [...]

Why this matters
Why now

The disclosure of the FortiBleed campaign highlights the ongoing and evolving threat landscape targeting critical network infrastructure, leveraging sophisticated custom tools for credential theft.

Why it’s important

A strategic reader should care because successful attacks on network security devices like FortiGate can compromise entire organizational networks, leading to data breaches and operational disruption.

What changes

The incident reveals an increased sophistication in nation-state or advanced persistent threat (APT) group tactics, emphasizing the need for enhanced network security monitoring and rapid vulnerability patching.

Winners
  • · Cybersecurity solution providers (next-gen firewalls, EDR)
  • · Incident response firms
  • · Security researchers
Losers
  • · Organizations relying solely on perimeter defenses
  • · Fortinet (reputation)
  • · Organizations with compromised FortiGate devices
Second-order effects
Direct

Credential theft leads to unauthorized access to internal systems and data.

Second

Increased pressure on Fortinet and other network security vendors to enhance product security and incident response capabilities.

Third

Potential for regulatory fines and mandatory reporting for affected organizations, leading to industry-wide re-evaluation of supply chain security for critical infrastructure software.

Editorial confidence: 90 / 100 · Structural impact: 60 / 100
Original report

This signal links to a primary source. Continuum Brief monitors and indexes it as part of the live intelligence stream — we do not republish source content.

Read at BleepingComputer
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