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78.128.113.46 has a threat confidence score of 34%. This IP address from Bulgaria (AS209160, Miti 2000 EOOD) has been observed in 20 honeypot sessions targeting SSH, RTSP, SMTP, SMB, REDIS protocols. First observed on April 11, 2026, most recently active May 6, 2026.
Automated SMTP interaction performing a minimal capability check by issuing EHLO followed by a STARTTLS upgrade request and immediately terminating the session. This pattern is commonly associated with internet-wide scanners, security research crawlers, or opportunistic bots verifying whether an SMTP service supports encrypted communication. The absence of authentication attempts or message submission indicates reconnaissance or service fingerprinting rather than active abuse.