Elevated Risk
IP 178.16.52.192 is a high-risk address originating from Germany that has been linked to 178 reported incidents of credential-based attacks targeting web authentication systems, with activity most recently documented in January 2026. The IP demonstrates a strong activity frequency rating of 8/10, indicating sustained and repeated hostile engagement against target infrastructure rather than opportunistic scanning. The dominant threat pattern involves WordPress login brute-force attempts and user enumeration probes, suggesting the operator is specifically targeting content management systems for unauthorized access.
The abuse reports for this IP originate entirely from community-based sources, with 20 distinct reporting parties contributing 178 total incident records spanning December 2025 through January 2026. The IP resides on network AS40999 operated by dus.net GmbH, a German hosting provider. The threat classification breakdown reveals 12 reports for WordPress login brute-force activity, 12 for general brute-force attempts, 8 for WordPress user enumeration, and 8 for broader hacking activity. This distribution indicates a deliberate, methodical campaign rather than generic scanning, with the attacker investing effort in identifying valid usernames before executing credential attacks.
WordPress login brute-force attacks work by systematically cycling through username and password combinations against the wp-login.php endpoint, exploiting weak or reused credentials to gain administrative access. User enumeration probes specifically attempt to harvest valid usernames through the author parameter in WordPress URLs, a reconnaissance step that enables more targeted credential stuffing. Once an attacker obtains valid admin credentials, the real-world impact can range from website defacement and malware distribution to complete database exfiltration and lateral movement into connected systems. The concentration of reports focused on WordPress infrastructure makes this IP particularly dangerous for organizations running content management systems with exposed admin panels.
Site operators should immediately block or heavily rate-limit traffic from 178.16.52.192 at the firewall or web application firewall level. Implementing multi-factor authentication on all administrative interfaces will significantly reduce the effectiveness of any credentials that might be compromised. Deploying intrusion prevention tools such as fail2ban configured to detect and temporarily ban IPs exhibiting brute-force patterns will provide automated protection. Regular monitoring of authentication logs for repeated failed login attempts from this address will help identify any successful breaches before significant damage occurs.
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