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Feds Secure Cisco Firewalls to Combat ‘Arcane Door’ Threat

Network Firewalls, Network Access Control, Security Operations CISA Issues Emergency Directive Following Ongoing Exploits of Cisco Devices Chris Riotta (@chrisriotta) • September 25, 2025 Image: Anucha Cheechang/Shutterstock The Cybersecurity and Infrastructure Security Agency (CISA) has issued a warning regarding an…