Threat Intelligence Briefing

Threat activity decreased by 9.2% compared to the previous 6-hour period, aligning with the 7-day average and indicating routine background noise. SSH brute-force attacks remain the dominant category, with clusters from ASNs in Russia, Bulgaria, and Romania responsible for the most persistent activity. Nordic countries show stable, low-level activity consistent with their baseline; Finland remains the most targeted in the region but with no significant deviation. The top threat IPs are ephemeral and part of known, widespread campaigns rather than new targeted activity. Defenders should prioritize blocking known malicious CIDR ranges associated with these SSH brute-force clusters from Eastern European ASNs rather than individual IPs. No immediate, time-sensitive actions are required as this activity represents typical background scanning. Continue monitoring for any deviation from these established patterns, particularly any increase in web-based attacks targeting Nordic infrastructure.