Critical Threat
IP 45.135.194.83 is a maximum-risk address exhibiting sustained malicious activity, with a threat level of 10/10 and 194 independent abuse reports logged between April and June 2026. Operating from Germany through Pfcloud UG (AS51396), this host has been flagged by 20 separate automated honeypot sensors for repeated hacking and brute-force intrusion attempts, making it one of the most reliably hostile sources currently circulating in public threat feeds.
The detection picture is unambiguous: 194 total reports with an activity frequency rated 8/10 and a confidence score of 94 percent, indicating that security systems across multiple networks have independently confirmed the same hostile behaviour pattern. Community and honeypot reports consistently document the address attempting to compromise exposed authentication systems, with VNC brute-force attacks representing the dominant attack vector in recent submissions. The sustained reporting window spanning April through June 2026 demonstrates persistent, ongoing malice rather than a brief opportunistic scan.
VNC brute-force attacks pose a concrete and immediate risk to any exposed VNC (Virtual Network Computing) services, which are frequently used for remote desktop access in both enterprise and home environments. An attacker systematically cycling through authentication credentials against an exposed VNC endpoint can achieve full interactive remote control of the target system, enabling data theft, lateral movement within a network, or the deployment of secondary payloads. The volume and persistence of activity from this address suggests an automated scanning infrastructure rather than isolated manual probing, meaning exposed services will face repeated automated attempts until the source is blocked.
Site operators should immediately block IP 45.135.194.83 at the network perimeter and monitor for any connection attempts from adjacent address ranges within AS51396. Exposed VNC services should be protected behind VPN authentication or, preferably, removed from direct internet exposure entirely. Implementing authentication hardening measures such as multi-factor authentication, strong account lockout policies, and rate-limiting on authentication endpoints will significantly reduce the effectiveness of brute-force attempts. Deploying defensive tools such as fail2ban to automatically block repeated failed login attempts provides an additional automated layer of protection against this class of attack.
NL 
SE 
IR 
RO 
FR 
TR