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91.196.152.238 has a threat confidence score of 37%. This IP address from France (AS213412, ONYPHE SAS) has been observed in 23 honeypot sessions targeting SMTP, SSH, SIP, SMB, IMAP and 4 other protocols. First observed on February 9, 2026, most recently active March 23, 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.