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45.78.237.21 has a threat confidence score of 100%. This IP address from Singapore (AS150436, Byteplus Pte. Ltd.) has been observed in 414 honeypot sessions targeting SSH protocols. Detected attack patterns include ssh authorized keys persistence established. First observed on January 21, 2026, most recently active March 20, 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.