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189.90.33.23 has a threat confidence score of 100%. This IP address from Brazil (AS28191, Jupiter Telecomunicacoes e Informatica Ltda) has been observed in 523 honeypot sessions targeting SSH protocols. Detected attack patterns include ssh authorized keys persistence established. First observed on January 20, 2026, most recently active March 19, 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.
Attempts to remove filesystem attribute protections (e.g., immutable flags via chattr -i/-a) from the user’s ~/.ssh directory. This pattern indicates preparatory activity to modify SSH trust configuration, commonly preceding insertion or replacement of authorized_keys for persistence.