PEERSTITCH: Memory-Resident ARM64 Implant Deployed on 500+ FortiGate Firewalls

Palo Alto Unit 42 reports an intrusion campaign exploiting CVE-2024-47575 to compromise over 500 FortiGate firewalls, deploying PEERSTITCH, a stealthy memory-resident ARM64 implant. The implant's memory-resident nature and scale suggest a sophisticated, likely state-sponsored actor, though attribution remains unconfirmed. This highlights a significant supply-chain risk to network perimeter devices and underscores the need for urgent patching and monitoring.