Critical Threat
IP 31.170.22.206 is a critical-risk address linked to sustained SSH brute-force attacks and general intrusion activity, having generated 371 abuse reports from automated honeypot sensors with a maximum threat score of 10/10. Originating from Latvia's ASN 43513 operated by Sia Nano IT, this IP represents a significant danger to any externally accessible SSH service.
Analysis of the 371 reports reveals a concentrated threat profile dominated by SSH attacks (18 reports) and broader hacking activity (19 reports), with a single exploited-host classification indicating this address may itself be a compromised system used as an attack platform. Detection occurred exclusively through 20 automated honeypot sensors over a two-month window from February to March 2026, yielding a 66% confidence score. Despite the now-quiet activity frequency rating of 0/10, the volume and consistency of historical reports confirm this IP's persistent involvement in credential-guessing campaigns targeting SSH services worldwide.
SSH brute-force attacks employ automated tools that systematically attempt username and password combinations against exposed servers, exploiting weak or default credentials to gain unauthorized shell access. Once inside, attackers typically install backdoors, cryptocurrency miners or additional malware, effectively hijacking the compromised server for further criminal operations. The Suricata alerts logged against this address specifically document brute-force attempts and active SSH sessions on expected ports, patterns consistent with organized credential-stuffing infrastructure rather than opportunistic scanning.
Site operators should immediately block 31.170.22.206 at the firewall level and implement fail2ban or equivalent rate-limiting tools to automatically ban repeated authentication failures. Hardening SSH access through key-based authentication, non-standard port configuration and disabled root login dramatically reduces susceptibility to these automated attacks. Keeping remote-access services patched and monitoring logs for authentication anomalies from this address range provides additional defensive depth against similar threat sources.
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