This IP address has been reported a total of
4,706
times from
1,122 distinct
sources.
81.193.159.166 was first reported on
, and the most recent report was
.
Recent Reports:
We have received reports of abusive activity from this IP address within the last week. It is
potentially still actively engaged in abusive activities.
Automated SSH brute-force attack detected. The IP repeatedly attempted to authenticate to port 22 us ...
show moreAutomated SSH brute-force attack detected. The IP repeatedly attempted to authenticate to port 22 using multiple usernames and password guesses within a short timeframe.
show less
2026-04-10T12:05:29.510248+00:00 s9023187190 sshd[196217]: Invalid user ubuntu from 81.193.159.166 p ...
show more2026-04-10T12:05:29.510248+00:00 s9023187190 sshd[196217]: Invalid user ubuntu from 81.193.159.166 port 43648
2026-04-10T12:05:29.514336+00:00 s9023187190 sshd[196217]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.193.159.166
2026-04-10T12:05:31.952058+00:00 s9023187190 sshd[196217]: Failed password for invalid user ubuntu from 81.193.159.166 port 43648 ssh2
...
show less
2026-04-10T19:26:54.478025+08:00 localhost sshd[3721040]: Invalid user ubuntu from 81.193.159.166 po ...
show more2026-04-10T19:26:54.478025+08:00 localhost sshd[3721040]: Invalid user ubuntu from 81.193.159.166 port 53260
2026-04-10T19:28:47.556224+08:00 localhost sshd[3723219]: Invalid user teamspeak from 81.193.159.166 port 56198
2026-04-10T19:30:49.259294+08:00 localhost sshd[3725570]: Invalid user admin from 81.193.159.166 port 59144
...
show less
(sshd) Failed SSH login from 81.193.159.166 (PT/Portugal/bl4-159-166.dsl.telepac.pt): 5 in the last ...
show more(sshd) Failed SSH login from 81.193.159.166 (PT/Portugal/bl4-159-166.dsl.telepac.pt): 5 in the last 3600 secs; Ports: *; Direction: 1; Trigger: LF_SSHD; Logs: Apr 10 05:16:18 17409 sshd[20361]: Invalid user oracle from 81.193.159.166 port 54744
Apr 10 05:16:21 17409 sshd[20361]: Failed password for invalid user oracle from 81.193.159.166 port 54744 ssh2
Apr 10 05:21:02 17409 sshd[20754]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.193.159.166 user=root
Apr 10 05:21:04 17409 sshd[20754]: Failed password for root from 81.193.159.166 port 56228 ssh2
Apr 10 05:23:03 17409 sshd[20909]: Invalid user library from 81.193.159.166 port 58476
show less
(sshd) Failed SSH login from 81.193.159.166 (PT/Portugal/bl4-159-166.dsl.telepac.pt): 5 in the last ...
show more(sshd) Failed SSH login from 81.193.159.166 (PT/Portugal/bl4-159-166.dsl.telepac.pt): 5 in the last 3600 secs; Ports: *; Direction: 1; Trigger: LF_SSHD; Logs: Apr 10 03:35:09 15663 sshd[5400]: Invalid user paula from 81.193.159.166 port 56426
Apr 10 03:35:11 15663 sshd[5400]: Failed password for invalid user paula from 81.193.159.166 port 56426 ssh2
Apr 10 03:38:04 15663 sshd[5642]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.193.159.166 user=root
Apr 10 03:38:06 15663 sshd[5642]: Failed password for root from 81.193.159.166 port 39178 ssh2
Apr 10 03:40:09 15663 sshd[5803]: Invalid user developer from 81.193.159.166 port 42252
show less
2026-04-10T10:36:18.885659+02:00 dArtagnan sshd[170745]: Failed password for invalid user paula from ...
show more2026-04-10T10:36:18.885659+02:00 dArtagnan sshd[170745]: Failed password for invalid user paula from 81.193.159.166 port 44966 ssh2
2026-04-10T10:38:30.426631+02:00 dArtagnan sshd[171881]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.193.159.166 user=root
2026-04-10T10:38:32.283841+02:00 dArtagnan sshd[171881]: Failed password for root from 81.193.159.166 port 49134 ssh2
...
show less
Brute-Force
SSH
Anonymous
Apr 10 16:35:52 vserver-sin01 sshd[2077234]: Failed password for invalid user paula from 81.193.159. ...
show moreApr 10 16:35:52 vserver-sin01 sshd[2077234]: Failed password for invalid user paula from 81.193.159.166 port 52650 ssh2
Apr 10 16:38:18 vserver-sin01 sshd[2077816]: Connection from 81.193.159.166 port 59598 on 139.180.141.81 port 2396 rdomain ""
Apr 10 16:38:19 vserver-sin01 sshd[2077816]: User root from 81.193.159.166 not allowed because not listed in AllowUsers
...
show less
Apr 10 02:33:30 b146-62 sshd[731495]: Failed password for invalid user paula from 81.193.159.166 por ...
show moreApr 10 02:33:30 b146-62 sshd[731495]: Failed password for invalid user paula from 81.193.159.166 port 50412 ssh2
Apr 10 02:37:21 b146-62 sshd[731549]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.193.159.166 user=root
Apr 10 02:37:23 b146-62 sshd[731549]: Failed password for root from 81.193.159.166 port 43322 ssh2
...
show less
Brute-Force
SSH
Showing 4621 to
4635
of 4706 reports
Think this IP has been falsely reported? You may request to have the associated
reports reviewed and removed.
Request Takedown 🚩