Significant Threat
IP 78.142.18.172 is a high-risk address originating from Bulgaria (AS213438, ColocaTel Inc.) that presents a significant threat to internet-facing services, with 430 abuse reports and a threat level of 8/10 reflecting sustained, automated malicious activity targeting authentication systems and web applications. The IP has been actively engaged in brute-force authentication attacks, credential stuffing operations, and WordPress vulnerability probing since May 2026, demonstrating both persistence and technical sophistication in its attack methodology. Detection sources including automated honeypot sensors and community reports consistently flag this address for systematic attempts to compromise login credentials and exploit web application vulnerabilities, particularly targeting WordPress installations through credential stuffing and REST API enumeration.
The high volume and diversity of reported threats—spanning brute-force attacks, hacking attempts, and distributed denial-of-service activity—indicate a compromised host or rented attack infrastructure operated by actors employing automated toolchains to maximize reach across potential targets. The concentration of activity around web authentication endpoints and content management systems suggests the IP is part of coordinated scanning and exploitation campaigns rather than opportunistic random probing. Organizations with publicly accessible login portals, especially those running WordPress, face immediate exposure to credential-guessing attacks, unauthorized access attempts, and potential account compromise if adequate defenses are not in place.
Defensive measures should include implementing strict rate limiting on authentication endpoints, deploying account lockout policies after repeated failed login attempts, and enforcing multi-factor authentication across all user accounts to prevent credential-based access even if passwords are successfully guessed. Web application firewalls can help block the specific probe patterns and enumeration attempts observed from this source. Network operators should consider blocking or monitoring traffic from this address at the perimeter level and configure alerting for any inbound connection attempts matching the documented attack signatures.
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