High Risk
87.121.84.82 is a high-risk address associated with sustained SSH brute-force attacks, posing a significant threat to exposed authentication services. This IP has accumulated 209 abuse reports with a 97% confidence score, indicating highly reliable detection across multiple automated honeypot sensors. The dominant threat profile consists of SSH login attempts and brute-force authentication attacks, with 19 of the most recent reports specifically documenting SSH-related activity. The temporal clustering in April 2026 suggests an active, ongoing campaign rather than an isolated incident.
Detection data confirms that this address has repeatedly triggered automated monitoring systems, with honeypot sensors across 20 distinct reporting nodes logging violation events. The activity frequency score of 3/10 and the aggregate report volume of 209 incidents indicate persistent, multi-session engagement rather than opportunistic scanning. The attack patterns reveal a coordinated approach: multiple sequential brute-force attempts against SSH services, combined with recidive behavior indicating the source continues targeting systems even after initial detection and countermeasures. The AS215925 autonomous system, operated by Vpsvault.host Ltd, provides the network infrastructure supporting these operations.
SSH brute-force attacks represent one of the most common initial access vectors in unauthorized intrusion attempts. Attackers systematically cycle through credential combinations to compromise servers running exposed SSH daemons, particularly those with weak or default passwords. Once access is obtained, threat actors can deploy persistent backdoors, exfiltrate sensitive data, or leverage the compromised host for lateral movement within networks. The recidive patterns documented in the detection logs suggest this IP is operated by an automated tool capable of circumventing basic rate limiting and continuing operations across multiple observation windows.
Site operators should implement key-based authentication for all SSH access and disable password-based authentication entirely where feasible. Deploying rate-limiting mechanisms and account lockout policies significantly raises the barrier for automated credential-stuffing campaigns. Systems should be monitored using intrusion detection tools capable of identifying anomalous authentication patterns, and exposed SSH services should be relocated to non-standard ports to reduce automated targeting. Regular review of authentication logs and blocking of known malicious sources via network-level controls provide additional defense-in-depth against similar threat activity.
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