#1
The Record
threat-intel
April 23, 2026 at 19:03 UTC
CISA: US agency breached through Cisco vulnerability, FIRESTARTER backdoor allowed access through March
AI Summary
CISA disclosed that an unnamed federal agency was breached through Cisco firewall vulnerabilities and infected with FIRESTARTER backdoor malware, which allowed hackers persistent access through March 2026 even after patches were applied. The incident demonstrates how threat actors can maintain long-term persistence in critical infrastructure networks despite remediation efforts.
Relevance score: 95.0/100
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