This IP address has been reported a total of
39
times from
16 distinct
sources.
81.91.150.211 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 sensor: 45 SSH brute-force attempts over the last 24h (latest 2026-09-03T12:57Z). Username ...
show moreAutomated sensor: 45 SSH brute-force attempts over the last 24h (latest 2026-09-03T12:57Z). Usernames tried: root, ubuntu, bitcoin, cloud.
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2026-09-03T03:12:03.050938+00:00 sg-jumphost-server sshd[1876146]: Invalid user sarah from 81.91.150 ...
show more2026-09-03T03:12:03.050938+00:00 sg-jumphost-server sshd[1876146]: Invalid user sarah from 81.91.150.211 port 37086
2026-09-03T03:12:03.283868+00:00 sg-jumphost-server sshd[1876146]: Connection closed by invalid user sarah 81.91.150.211 port 37086 [preauth]
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[Auto ban] Fail2Ban jail sshd on host: 5 failures in 2h. Excerpt: 2026-09-02T14:40:43.405902+00:00 U ...
show more[Auto ban] Fail2Ban jail sshd on host: 5 failures in 2h. Excerpt: 2026-09-02T14:40:43.405902+00:00 Ubuntu-Toronto1 sshd[2168239]: Invalid user crypto from 81.91.150.211 port 37244
2026-09-02T16:14:57.698072+00:00 Ubuntu-Toronto1 sshd[2209799]: Invalid user cloud from 81.91.150.211 port 48716
2026-09-02T16:24:02.066338+00:00 Ubuntu-Toronto1 sshd[2213874]: Invalid user ubuntu from 81.91.150.211 port 47324
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2026-09-02T12:01:11.631776 telos sshd[3886900]: Invalid user server from 81.91.150.211 port 58320
20 ...
show more2026-09-02T12:01:11.631776 telos sshd[3886900]: Invalid user server from 81.91.150.211 port 58320
2026-09-02T13:41:10.900051 telos sshd[3889688]: Invalid user pm2 from 81.91.150.211 port 56506
2026-09-02T14:29:32.284694 telos sshd[3892068]: Invalid user crypto from 81.91.150.211 port 45476
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2026-09-02T07:12:56.088454-04:00 site sshd-session[184022]: Invalid user server from 81.91.150.211 p ...
show more2026-09-02T07:12:56.088454-04:00 site sshd-session[184022]: Invalid user server from 81.91.150.211 port 52894
2026-09-02T08:49:05.102373-04:00 site sshd-session[184786]: Invalid user pm2 from 81.91.150.211 port 46170
2026-09-02T10:17:43.390290-04:00 site sshd-session[187895]: Invalid user crypto from 81.91.150.211 port 55128
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2026-09-02T10:47:11.029189+00:00 sgp01 sshd[1457605]: Invalid user server from 81.91.150.211 port 54 ...
show more2026-09-02T10:47:11.029189+00:00 sgp01 sshd[1457605]: Invalid user server from 81.91.150.211 port 54724
2026-09-02T12:05:03.679541+00:00 sgp01 sshd[1461262]: Invalid user server from 81.91.150.211 port 51972
2026-09-02T12:19:09.713394+00:00 sgp01 sshd[1461869]: Invalid user pm2 from 81.91.150.211 port 40390
2026-09-02T13:45:11.004458+00:00 sgp01 sshd[1466769]: Invalid user pm2 from 81.91.150.211 port 50612
2026-09-02T14:00:03.957687+00:00 sgp01 sshd[1467771]: Invalid user crypto from 81.91.150.211 port 39794
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Automated sensor: 3 SSH brute-force attempts over the last 24h (latest 2026-09-02T11:50Z). Usernames ...
show moreAutomated sensor: 3 SSH brute-force attempts over the last 24h (latest 2026-09-02T11:50Z). Usernames tried: server.
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2026-09-02T11:09:55.613928+00:00 sg-jumphost-server sshd[1823598]: Invalid user server from 81.91.15 ...
show more2026-09-02T11:09:55.613928+00:00 sg-jumphost-server sshd[1823598]: Invalid user server from 81.91.150.211 port 37874
2026-09-02T11:09:55.849463+00:00 sg-jumphost-server sshd[1823598]: Connection closed by invalid user server 81.91.150.211 port 37874 [preauth]
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