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115.21.72.248 has a threat confidence score of 96%. This IP address from South Korea (AS4766, Korea Telecom) has been observed in 24 honeypot sessions targeting SSH protocols. Detected attack patterns include ssh authorized keys persistence established. First observed on March 25, 2026, most recently active March 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.