Threat Intelligence Briefing

Global threat activity increased by 80.8% compared to the previous 6-hour period, representing a significant deviation from baseline. The surge is primarily driven by malware C2 (820 events) and SSH brute force attacks, largely originating from Dutch (ASN 14061, 20473) and Russian (ASN 12389) infrastructure. Nordic activity remains low and stable, with Sweden (6 events) and Finland (4) showing routine SSH and attack probes consistent with their typical background noise. The concentrated attack patterns from specific ASNs are more concerning than the individual IPs. Focus defensive measures on the identified malicious network blocks. Consider implementing temporary blocking or aggressive rate-limiting for SSH traffic originating from the top contributing Dutch and Russian ASNs, as these represent coordinated campaigns rather than isolated incidents. Deprioritize individual IP addresses, as they are ephemeral within these larger hostile networks.