Extreme Threat
IP 5.188.206.30 is a high-risk address assigned to Krez 999 Eood in Bulgaria (ASN AS200391) that has accumulated 1,344 abuse reports with a 94% confidence score, indicating sustained and targeted hacking activity between April and August 2026.
The volume of reports and elevated activity frequency of 8/10 make this one of the most prolific threats documented in recent threat-intelligence feeds. All 1,344 reports originated exclusively from automated honeypot sensors, suggesting the address is systematically probing internet-facing infrastructure at scale rather than relying on manual community-driven identification. The detection window spans approximately five months, with continuous activity throughout the reporting period, pointing to an automated campaign rather than opportunistic or fleeting contact.
Suricata intrusion-detection systems flagged this address for sending ICMP Destination Unreachable packets with an administrative-prohibition code, a technique commonly used in network reconnaissance and to probe firewall rule effectiveness. This behavior falls under general hacking activity, which encompasses unauthorized access attempts and exploitation probing. An address exhibiting this pattern may be mapping network defenses, testing egress filters, or preparing for more targeted intrusion by identifying responsive hosts and filtering rules.
Site operators should block or rate-limit traffic from this address at the firewall level, implement strict egress filtering to limit ICMP outbound traffic where unnecessary, and deploy fail2ban or equivalent dynamic blocking tools to automatically mitigate repeated connection attempts. Keeping systems patched and monitoring for correlated anomalous traffic patterns remain essential defensive practices against the broader exploitation techniques this address represents.
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