Threat Intelligence Briefing

Global threat volume spiked significantly, with a 128.9% increase compared to the previous 6-hour period, indicating a major deviation from typical baseline activity. This surge is primarily driven by SSH brute force attacks, with a concentrated cluster from the US-based ASN range 87.251.64.0/24 being particularly active. Nordic activity remains stable and low, consistent with their 7-day average, with Sweden showing the highest regional volume at 9 events. The scale and focus of this SSH campaign represent a notable escalation in automated credential attacks. Given the coordinated nature of this activity from specific CIDR blocks, consider implementing temporary rate-limiting or blocking measures against the originating /24 network ranges, particularly those associated with SSH brute force. Deprioritize individual IP addresses from the Nordic region as they represent routine background noise.