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122.51.216.86 has a threat confidence score of 100%. This IP address from China (AS45090, Shenzhen Tencent Computer Systems Company Limited) has been observed in 140 honeypot sessions and reported 2 times targeting SSH protocols. Detected attack patterns include ssh authorized keys persistence established, ssh automated post compromise recon and persistence chain. First observed on January 22, 2026, most recently active March 30, 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.
Identifies an SSH session performing comprehensive automated host reconnaissance (CPU, memory, disk, processes, users), followed by credential modification and SSH key manipulation consistent with scripted post-compromise takeover and persistence establishment.
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.
| Reporter | Date | Category | Protocol | Comment |
|---|---|---|---|---|
| Anonymous | Mar 24, 2026, 20:04 | Brute Force | SSH | SikkerGuard: 8 blocked packets |
| Anonymous | Mar 16, 2026, 20:59 | Brute Force | SSH | SikkerGuard: 8 blocked packets |