This IP address has been reported a total of
62
times from
24 distinct
sources.
103.121.20.18 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.
[Auto ban] Fail2Ban jail sshd on host: 3 failures in 2h. Excerpt: 2026-09-02T06:43:02.139989+00:00 U ...
show more[Auto ban] Fail2Ban jail sshd on host: 3 failures in 2h. Excerpt: 2026-09-02T06:43:02.139989+00:00 Ubuntu-Toronto1 sshd[1946354]: Invalid user validator3 from 103.121.20.18 port 41998
2026-09-02T07:31:44.392673+00:00 Ubuntu-Toronto1 sshd[1969108]: Invalid user stanley from 103.121.20.18 port 52618
2026-09-02T08:46:04.797068+00:00 Ubuntu-Toronto1 sshd[2005131]: Invalid user chi from 103.121.20.18 port 52018
show less
Brute-Force
SSH
Anonymous
2026-09-01T21:45:53.140142+00:00 mail sshd[977223]: Invalid user undernet from 103.121.20.18 port 45 ...
show more2026-09-01T21:45:53.140142+00:00 mail sshd[977223]: Invalid user undernet from 103.121.20.18 port 45264
2026-09-01T23:06:58.052411+00:00 mail sshd[982599]: Invalid user ansible from 103.121.20.18 port 46830
2026-09-02T00:31:34.891966+00:00 mail sshd[988344]: Invalid user android from 103.121.20.18 port 41072
...
show less
Brute-Force
SSH
Anonymous
Sep 1 12:46:57 wp sshd[308164]: Failed password for invalid user ken from 103.121.20.18 port 49908 ...
show moreSep 1 12:46:57 wp sshd[308164]: Failed password for invalid user ken from 103.121.20.18 port 49908 ssh2
Sep 1 12:51:40 wp sshd[309241]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.121.20.18 user=root
Sep 1 12:51:42 wp sshd[309241]: Failed password for root from 103.121.20.18 port 43506 ssh2
...
show less
2026-09-01T11:43:45.474308 telos sshd[3853630]: Invalid user ec2-user from 103.121.20.18 port 48104
...
show more2026-09-01T11:43:45.474308 telos sshd[3853630]: Invalid user ec2-user from 103.121.20.18 port 48104
2026-09-01T13:01:55.441055 telos sshd[3857688]: Invalid user book from 103.121.20.18 port 47926
2026-09-01T14:28:06.778309 telos sshd[3868037]: Invalid user newman from 103.121.20.18 port 59690
show less
2026-09-01T07:35:55.792111-04:00 site sshd-session[165625]: Invalid user ec2-user from 103.121.20.18 ...
show more2026-09-01T07:35:55.792111-04:00 site sshd-session[165625]: Invalid user ec2-user from 103.121.20.18 port 48758
2026-09-01T08:53:19.656925-04:00 site sshd-session[168808]: Invalid user book from 103.121.20.18 port 48038
2026-09-01T10:18:57.807626-04:00 site sshd-session[175891]: Invalid user newman from 103.121.20.18 port 47312
...
show less
2026-09-01T11:08:39.500711+00:00 sgp01 sshd[1380104]: Invalid user ec2-user from 103.121.20.18 port ...
show more2026-09-01T11:08:39.500711+00:00 sgp01 sshd[1380104]: Invalid user ec2-user from 103.121.20.18 port 53792
2026-09-01T11:23:44.626767+00:00 sgp01 sshd[1381800]: Invalid user ec2-user from 103.121.20.18 port 59434
2026-09-01T12:23:21.950243+00:00 sgp01 sshd[1387638]: Invalid user book from 103.121.20.18 port 55892
2026-09-01T12:39:52.638072+00:00 sgp01 sshd[1389294]: Invalid user book from 103.121.20.18 port 51186
2026-09-01T13:46:23.597463+00:00 sgp01 sshd[1397252]: Invalid user newman from 103.121.20.18 port 60628
...
show less
[Auto ban] Fail2Ban jail sshd on host: 3 failures in 2h. Excerpt: 2026-09-01T10:47:21.889224+00:00 U ...
show more[Auto ban] Fail2Ban jail sshd on host: 3 failures in 2h. Excerpt: 2026-09-01T10:47:21.889224+00:00 Ubuntu-Toronto1 sshd[1393843]: Invalid user ec2-user from 103.121.20.18 port 38784
2026-09-01T11:59:47.405298+00:00 Ubuntu-Toronto1 sshd[1425742]: Invalid user book from 103.121.20.18 port 53194
2026-09-01T13:19:27.628370+00:00 Ubuntu-Toronto1 sshd[1463672]: Invalid user newman from 103.121.20.18 port 42166
show less
Brute-Force
SSH
Anonymous
2026-09-01T10:45:24.218400+00:00 mail sshd[937618]: Invalid user ec2-user from 103.121.20.18 port 39 ...
show more2026-09-01T10:45:24.218400+00:00 mail sshd[937618]: Invalid user ec2-user from 103.121.20.18 port 39166
2026-09-01T11:57:39.734200+00:00 mail sshd[940584]: Invalid user book from 103.121.20.18 port 57416
2026-09-01T13:17:12.033355+00:00 mail sshd[944573]: Invalid user newman from 103.121.20.18 port 51850
...
show less
Automated sensor: 3 SSH brute-force attempts over the last 24h (latest 2026-09-01T11:19Z). Usernames ...
show moreAutomated sensor: 3 SSH brute-force attempts over the last 24h (latest 2026-09-01T11:19Z). Usernames tried: ec2-user.
show less
2026-09-01T10:46:26.827312+00:00 sg-jumphost-server sshd[1702254]: Invalid user ec2-user from 103.12 ...
show more2026-09-01T10:46:26.827312+00:00 sg-jumphost-server sshd[1702254]: Invalid user ec2-user from 103.121.20.18 port 50724
2026-09-01T10:46:26.844166+00:00 sg-jumphost-server sshd[1702254]: Connection closed by invalid user ec2-user 103.121.20.18 port 50724 [preauth]
...
show less