Threat Intelligence Briefing

The threat landscape has spiked, with overall threat reports surging 116% compared to the previous 6-hour window. SSH brute-force attacks constitute the overwhelming majority, accounting for 99% of all activity. Limited Nordic activity was observed, with isolated SSH brute-force attempts originating from single IPs in both Iceland and Sweden. Top attacking IPs are primarily located in Russia and the Netherlands, however no specific hosting providers are being heavily abused at this time. No Tor exit node activity was observed during the period. Given the surge in SSH brute-force attempts, monitor networks for unusual login activity and consider implementing rate limiting or multi-factor authentication. Closely monitor ASNs associated with the top attacking countries, particularly Russia and the Netherlands. Prioritize investigation of any successful SSH login attempts from these regions. Continue to track emerging threats like CMS and mail authentication brute-forcing as they represent a potential shift in attacker tactics.