Improve Router Hygiene to Protect Against Russian State-Sponsored Targeting

Russian state-sponsored actors are exploiting poorly configured and vulnerable networking devices, primarily routers, across critical infrastructure sectors worldwide. This joint cybersecurity advisory, released by numerous international agencies, highlights the tactics, techniques, and procedures (TTPs) used by the FSB Center 16 cyber actors, urging network defenders to implement specific mitigations to prevent exploitation. Key recommendations include disabling Cisco Smart Install, using strong SNMPv3 authentication, and restricting access to vulnerable ports.