Critical Alert
IP 176.117.107.91 is a high-risk Netherlands-based address associated with automated intrusion activity, accumulating 3,994 abuse reports from twenty separate honeypot sensors and carrying a maximum threat score of 10 out of 10. The dominant threat classification reflects broad hacking activity encompassing unauthorized access attempts and vulnerability exploitation, with SSH-specific attack patterns confirmed through fail2ban detections.
Analysis of the report corpus reveals that the majority of threat events—18 of the categorized incidents—fall under general hacking activity, while 2 reports specifically document SSH-targeted attacks. The Pfcloud UG network (ASN 51396) operating from the Netherlands has been implicated in sustained automated probing detected exclusively during December 2025. Despite the extraordinarily high report volume, the activity frequency metric registers at zero, suggesting that while this IP generated significant historical abuse reports, no fresh malicious activity has been logged in the immediate detection window. The 63 percent confidence score indicates moderate certainty in the threat classification, accounting for potential false positives or shared infrastructure assignments.
Hacking activity of this nature typically involves automated scripts conducting port scanning, credential stuffing, and exploitation attempts against exposed services. The confirmed SSH attack pattern—specifically triggering sshd protections in fail2ban—demonstrates that this address has been used to conduct distributed brute-force authentication attacks against remote access infrastructure. Even a single successful compromise through credential guessing could grant attackers persistent server access, enabling data exfiltration, lateral movement, or further exploitation of connected systems.
Site operators should implement immediate blocking or rate-limiting measures for this address at the network perimeter firewall or WAF layer. Hardening SSH access is critical: enforce key-based authentication exclusively, disable root login, and relocate the service to a non-standard port. Deploying or configuring fail2ban with strict ban thresholds will automatically mitigate brute-force campaigns from repeating sources. Continuous monitoring of authentication logs for source IPs matching this range and similar probing signatures will help identify whether this infrastructure pivots to alternative attack vectors.
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