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156.245.144.121 has a threat confidence score of 75%. This IP address from Singapore (AS54801, Zillion Network Inc.) has been observed in 17 honeypot sessions targeting SSH protocols. Detected attack patterns include ssh authorized keys persistence established. First observed on March 28, 2026, most recently active April 26, 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.