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The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has revealed that an unnamed federal civilian agency's Cisco Firepower device running Adaptive Security Appliance (ASA) software was compromised in September 2025 with a new malware called FIRESTARTER
Latest in long-running pwning of Cisco kit found in mystery Fed agency A US federal agency was successfully targeted by a previously unknown backdoor malware called Firestarter, according to CISA cybersnoops and their UK counterparts – neither of which disclosed the agency's name.…
Investigators found the malware, dubbed Firestarter, on a federal agency's network in a campaign dating back to at least September 2025. The post US, UK agencies warn hackers were hiding on Cisco firewalls long after patches were applied appeared first on CyberScoop.
CISA and NCSC co-released a Malware Analysis Report today on a Cisco ASA/Firepower backdoor that patching does not remove. Here is what it does, why Sigma will not save you, and what to do this week.
CISA Issues Emergency Directive After Cisco Exploits Persist After RebootCISA issued an emergency directive Thursday after discovering an advanced hacking campaign exploiting two persistent zero-days in Cisco firewall gear - malware that survives system reboots and upgrades - forcing agencies to disconnect vulnerable devices by Friday.