Threat Intelligence Briefing

Global threat activity represents a significant deviation from baseline, spiking over 150% compared to the previous 6-hour period to 2,700 events. This surge is driven by a concentrated SSH brute-force campaign originating primarily from Dutch (ASN 20473, 43350) and Russian (ASN 48347) infrastructure. Nordic activity remains routine and consistent with 7-day averages, with Sweden (9 events) and Finland (5 events) seeing typical SSH and web attack probes. The volume and source concentration indicate a coordinated attack wave, not routine background noise. Focus defensive actions on the identified CIDR blocks and ASNs associated with the brute-force campaign. Consider implementing temporary rate-limiting rules for SSH traffic originating from these networks. Routine Nordic activity does not warrant immediate escalation but should continue to be monitored.