Significant Threat
IP 78.142.18.172 is a high-risk address operating from Bulgaria (AS213438, ColocaTel Inc.) that presents a severe threat with 1,721 abuse reports and a threat level of 8 out of 10. The IP demonstrates persistent, high-frequency malicious activity dominated by WordPress login brute-force attacks and credential stuffing, indicating an automated campaign aimed at compromising web-based authentication systems. The activity window spans from May 2026 through July 2026, showing sustained offensive operations over a concentrated period with zero signs of benign use.
Detection data draws from 17 automated honeypot sensors and 3 community reports, yielding a 100% confidence score that this address is responsible for malicious traffic. The reported threat categories break down as: WordPress Login Brute Force (17 reports), Hacking activity (11 reports), general Brute-Force attempts (10 reports), and DDoS Attack activity (2 reports). Abstracted attack-pattern analysis reveals this actor systematically probes authentication endpoints via POST requests, escalates attacks through repeated violations of detection thresholds (notably triggering WordPress escalation jails with 50 violations), and recycles detected sessions to evade mitigation. Credential stuffing operations employ common and default administrative credential pairs, indicating reliance on known credential lists rather than sophisticated password generation.
WordPress login brute-force attacks represent one of the most prevalent automated threats against internet-facing websites, as WordPress powers a significant portion of the global web. Attackers use botnets or single high-volume sources to systematically attempt username and password combinations against the /wp-login.php endpoint, exploiting weak or reused credentials. The concrete risk is unauthorized administrative access, which grants attackers full control over the compromised site—enabling data theft, malware distribution, further network penetration, and use of the site as an bot node. The presence of recidive (multi-jail offender) patterns confirms this actor actively evades initial blocks and continues its campaign across multiple detection layers.
Site operators running WordPress or similar CMS platforms should immediately block or rate-limit traffic from this address at the firewall or WAF level. Implementing multi-factor authentication on all administrative accounts eliminates the primary attack surface, even if credentials are compromised. Deploying automated defense tools such as fail2ban with WordPress-specific jail rules that trigger after repeated failed login attempts will automatically ban offending IP addresses. Continuous monitoring of authentication logs for high-volume POST requests and common credential submissions will enable early detection of similar campaigns from adjacent IP ranges.
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