[peerstitch]

October 15, 2026

• Unit 42 disclosed PEERSTITCH, a stealthy FortiGate implant. The research connects it to post-exploitation activity in environments affected by FortiManager CVE-2024-47575, providing a new appliance-resident malware family for defenders to hunt. Unit 42 · Threat Activity

in A Crafted Attachment Can Root Cisco’s Secure Email Gateway