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🔥 A U.S. federal agency was hacked via Cisco firewall. Attackers used ASA flaws to install FIRESTARTER, a backdoor that stays even after patches and normal reboots. Fix requires full reimage or hard power cycle, not just updating software. 🔗 Read → https://thehackernews.com/2026/04/firestarter-backdoor-hit-federal-cisco.html