IP address 45.156.128.51 has been flagged in 397 abuse reports across 18 independent threat intelligence sources, resulting in a threat score of 100.0/100 (critical risk). The primary activity associated with this IP is abuseipdb blacklist, along with aggregated threat, attacks, brute force, dns abuse, known attacker, malicious, malware c2, malware infrastructure, rdp bruteforce, reconnaissance, reputation low, scanning, ssh brute force, ssh bruteforce, suspicious activity, web attack.
This IP is geolocated in Portugal and belongs to the network Sistemas Informaticos, S.A. (AS211680). Reports span from 2026-05-04 to 2026-07-05.
Assessment: With 397 abuse reports, 45.156.128.51 shows persistent malicious activity that has been flagged by multiple threat intelligence feeds. The IP has been observed conducting automated SSH login attempts against internet-facing servers, a technique commonly used to gain unauthorized access to systems.