Critical Threat
IP 176.65.149.31 is a critical-risk address that security monitoring systems have flagged 3,950 times for sustained hacking activity, primarily involving unauthorized SSH access attempts on non-standard ports. With a threat level of 10 out of 10 and a 93 percent confidence rating, this Dutch-hosted IP represents one of the most persistently malicious addresses currently circulating in public threat feeds.
The IP is registered to Pfcloud UG operating AS51396 in the Netherlands, a network that has generated substantial abuse complaints across the security community over an eight-month observation window from October 2025 through June 2026. Detection data originates exclusively from automated honeypot sensors, which recorded consistent attack signatures including unauthorized connection attempts and anomalous SSH session establishment on unusual port numbers. The activity frequency score of 8 out of 10 indicates that this address has been observed conducting malicious operations with high regularity rather than sporadic or opportunistic behavior.
The dominant threat category—general hacking activity—encompasses intrusion attempts, exploitation of vulnerable services, and unauthorized access probes. The specific pattern of SSH sessions initiated on non-standard ports suggests the operator is attempting to bypass standard firewall rules and evade signature-based detection by routing attack traffic through alternative channels. This technique is frequently employed to gain initial access to target systems, escalate privileges, and establish persistent footholds within victim networks.
Site operators should immediately block this IP at the network perimeter and implement layered authentication controls on any exposed SSH services. Deploying fail2ban or equivalent dynamic blocking tools can automatically detect and mitigate brute-force patterns. Enforcing key-based authentication, restricting login attempts, and monitoring for unusual port activity on SSH daemons will significantly reduce exposure to this class of threat.
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