SIS warns of Russian cyber-espionage operation with potential targets in Portugal

The Portuguese Security Intelligence Service (SIS) has issued a warning regarding a Russian cyber-espionage campaign targeting routers to intercept sensitive government, military, and critical infrastructure data. Coordinated by the GRU, the operation uses advanced tactics to compromise authentication credentials and encrypted communications. SIS advises those who suspect they have been targeted to contact national cybersecurity authorities. This alert was issued in collaboration with intelligence services from 15 other countries.