Threat Intelligence Briefing

Observed threat activity increased 23.3% in the last 6 hours, driven almost exclusively by SSH brute-force attacks. Compromised or attacker-controlled infrastructure is primarily based in China, Romania, and Russia. Minimal activity was detected in the Nordic region, with single SSH brute-force attacks originating from unique IPs in both Denmark and Sweden. No significant Tor exit node or hosting provider activity was observed. The majority of attacks appear to originate from datacenter IPs. Given the prevalence of SSH brute-force attempts, defenders should prioritize monitoring network segments allowing SSH access from outside trusted networks. Specific attention should be given to traffic originating from ASNs associated with the top attacking countries (China, Romania, Russia). Consider implementing rate limiting and strong password policies to mitigate ongoing brute-force campaigns.