Significant Threat
IP 77.83.39.218 is a high-risk address operating from Germany with a threat level of 7/10, primarily associated with SMTP abuse and hacking activity. The IP has accumulated 358 reports from automated honeypot sensors over approximately five months, indicating persistent malicious behavior despite a low activity frequency rating. While the modest report volume in each category—20 for email spam and 17 for hacking—suggests opportunistic rather than high-volume attacks, the consistency of the activity and the nature of the observed patterns warrant serious concern for any exposed mail or server infrastructure.
The IP 77.83.39.218 is registered to autonomous system AS215693 under the operator Bruno Andres Sampedro Trujillo, and it was first reported in December 2025 with continued activity through April 2026. Detection was exclusively handled by automated honeypot sensors, with 20 distinct sources flagging the address across multiple attack vectors. The dominant attack patterns involve SMTP spam and abuse, specifically triggering Suricata alerts related to malformed TCP stream packets with broken acknowledgments—a technique sometimes used to evade detection or exploit poorly configured mail servers. The 78% confidence score reflects the reasonable certainty that the observed behavior is genuinely malicious rather than misconfiguration or legitimate traffic.
The SMTP spam activity associated with this address poses a concrete threat to mail infrastructure, as mass distribution of unwanted emails can degrade server performance, damage sender reputation, and serve as a vector for phishing or malware campaigns. The hacking classification indicates that the same IP is conducting intrusion reconnaissance or exploitation attempts against exposed services beyond just mail systems. The broken ACK packet behavior observed in the attack patterns suggests the attacker may be probing for vulnerabilities in TCP stream handling or attempting to bypass security filters that rely on proper protocol compliance. Organizations with exposed SMTP services, unpatched applications, or weak authentication mechanisms are most at risk from this type of dual-vector threat.
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