Threat Intelligence Briefing
Analysis period: 2026-03-23T06:00:01.825201 - 2026-03-23T12:00:01.825201 (6 hours)
Executive Summary
Threat volume decreased significantly by 83.5% compared to the previous 6-hour period, representing a major deviation from the elevated baseline. This sharp decline is consistent with a typical weekend pattern following a high-activity weekday. Malware C2 remained the top category, but overall global traffic has returned to expected levels. Nordic countries showed minimal activity, with Sweden's 11 events and Norway's 5 events aligning with their routine background threat levels. The top threat IPs were primarily SSH brute-forcers from Russia, Vietnam, and Bulgaria, consistent with ongoing, widespread botnet activity.
Focus defensive actions on monitoring and blocking SSH brute-force patterns from ASNs in Eastern Europe and Southeast Asia, rather than individual IPs. This traffic is persistent background noise and does not warrant emergency measures. Prioritize investigating the malware C2 infrastructure, which remains the most significant volume-based threat. No immediate blocking recommendations are required for Nordic-originating traffic at this time.