Critical Threat
IP 204.76.203.192 is a Netherlands-based address assigned to Pfcloud UG (ASN AS51396) that presents a critical threat level of 10/10 according to aggregated intelligence, though the confidence score of 68% indicates some uncertainty in attribution. The IP has been associated with SSH-based malicious activity detected through automated honeypot sensors, with the bulk of documented reports originating during August and September 2025.
Analysis of the available reporting data reveals 458 total reports linked to this address, with 20 reports specifically categorised under the SSH threat classification from automated honeypot detection systems. The network is operated by Pfcloud UG, a provider that has been flagged for hosting abusive infrastructure. While the activity frequency metric of 0/10 suggests that reported malicious behaviour may have subsided or slowed recently, the volume and recency of abuse reports during the late summer 2025 window indicate a persistent pattern of SSH targeting. The geographic origin in the Netherlands and the AS number point to infrastructure that may be rented or resold, which is consistent with threat actors seeking to obfuscate their true origin.
SSH attacks represent one of the most common initial-access vectors leveraged by adversaries to compromise servers and network devices. Attackers systematically probe exposed SSH services using credential-cracking scripts and dictionaries, exploiting weak or default passwords to gain shell access. Once inside, threat actors can deploy backdoors, pivot laterally across internal networks, or use the compromised host as a staging point for further attacks. Even failed SSH attempts consume server resources and generate security-noise that can mask more sophisticated intrusion attempts. This IP has demonstrated the behavioural fingerprint of such scanning and brute-force activity according to the honeypot telemetry reviewed.
Organisations with publicly accessible SSH services should treat IP 204.76.203.192 as a high-risk source and block it at the firewall or network perimeter immediately. Enforcing key-based authentication instead of password-based login, disabling direct root access, and changing the default SSH port from 22 are fundamental hardening steps. Deploying intrusion-prevention tools such as fail2ban can automatically detect and ban IP addresses exhibiting brute-force patterns. Continuous monitoring of authentication logs and implementing rate-limiting on SSH connection attempts will further reduce exposure to credential-guessing campaigns from this and similar hostile addresses.
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