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66.132.172.162 has a threat confidence score of 49%. This IP address from United States (AS398324, Censys, Inc.) has been observed in 6 honeypot sessions targeting IMAP, SMTP protocols. First observed on March 24, 2026, most recently active March 25, 2026.
SMTP interaction identified as an internet-wide scanning probe originating from Censys infrastructure. The client announces itself via EHLO www.censys.io and issues a STARTTLS request to verify TLS upgrade support and collect service capability metadata. This pattern reflects automated reconnaissance and exposure mapping rather than direct exploitation, but still represents active external probing of the SMTP service.