Threat Intelligence Briefing

Observed threat activity decreased by 9.9% compared to the prior six-hour window. SSH brute-force attacks remain the dominant threat vector, comprising 66% of all reports, followed by malware command and control activity at 23%. No specific Nordic-region activity was observed in this period. The top attacking IPs are primarily associated with malware C2 or SSH brute-forcing, originating from various locations, including infrastructure not clearly attributed to a specific country. No significant Tor exit node abuse was detected. Given the continued prevalence of SSH brute-force attacks, defenders should prioritize monitoring network traffic for suspicious login attempts and implement multi-factor authentication. Closely monitor IPs `89.169.54.153` and `104.21.66.186` due to their high volume of malware C2 activity. Further investigation into the infrastructure hosting these IPs is recommended to identify potential patterns of abuse.