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172.191.239.155 has a threat confidence score of 100%. This IP address from United States (AS8075, Microsoft Corporation) has been observed in 666 honeypot sessions targeting SSH protocols. Detected attack patterns include ssh authorized keys persistence established. First observed on January 20, 2026, most recently active March 21, 2026.
Removal of filesystem attribute protections from the user’s .ssh directory followed by deletion and recreation of the directory and insertion of a new public key into authorized_keys. This pattern reflects deliberate modification of SSH trust configuration to establish persistent key-based access.