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103.81.86.166 has a threat confidence score of 94%. This IP address from Vietnam (AS140825, Thien Quang Digital technology joint stock company) has been observed in 27 honeypot sessions targeting SSH protocols. Detected attack patterns include ssh authorized keys persistence established. First observed on February 18, 2026, most recently active February 22, 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.