Recent reportsWe have received reports of abusive activity from this IP address within the last week. It is
potentially still actively engaged in abusive activities.
2026-11-07T08:49:32.271813+00:00 ubuntu sshd[643019]: Failed password for invalid user mikrotik from 51.159.77.50 port 38125 ssh2
2026-11-07T08:53:29.489534+00:00 ubuntu sshd[643485]: Invalid user felix from 51.159.77.50 port 36473
2026-11-07T08:53:2 ...
show more2026-11-07T08:49:32.271813+00:00 ubuntu sshd[643019]: Failed password for invalid user mikrotik from 51.159.77.50 port 38125 ssh2
2026-11-07T08:53:29.489534+00:00 ubuntu sshd[643485]: Invalid user felix from 51.159.77.50 port 36473
2026-11-07T08:53:29.776394+00:00 ubuntu sshd[643485]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.159.77.50
2026-11-07T08:53:32.460185+00:00 ubuntu sshd[643485]: Failed password for invalid user felix from 51.159.77.50 port 36473 ssh2
2026-11-07T08:57:10.296089+00:00 ubuntu sshd[643812]: Invalid user cat from 51.159.77.50 port 8630
...
show less
2026-11-07T07:39:48.569477+00:00 ubuntu sshd[634359]: Failed password for invalid user yi from 51.159.77.50 port 22998 ssh2
2026-11-07T07:43:26.234658+00:00 ubuntu sshd[634888]: Invalid user student11 from 51.159.77.50 port 5637
2026-11-07T07:43:26.5 ...
show more2026-11-07T07:39:48.569477+00:00 ubuntu sshd[634359]: Failed password for invalid user yi from 51.159.77.50 port 22998 ssh2
2026-11-07T07:43:26.234658+00:00 ubuntu sshd[634888]: Invalid user student11 from 51.159.77.50 port 5637
2026-11-07T07:43:26.515409+00:00 ubuntu sshd[634888]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.159.77.50
2026-11-07T07:43:28.196596+00:00 ubuntu sshd[634888]: Failed password for invalid user student11 from 51.159.77.50 port 5637 ssh2
2026-11-07T07:46:48.005344+00:00 ubuntu sshd[635141]: Invalid user bomi from 51.159.77.50 port 12042
...
show less
2026-11-07T06:32:48.428766+00:00 ubuntu sshd[626195]: Failed password for invalid user ryusangwon from 51.159.77.50 port 12815 ssh2
2026-11-07T06:36:11.735737+00:00 ubuntu sshd[626451]: Invalid user haneulchan from 51.159.77.50 port 59480
2026-11-07T ...
show more2026-11-07T06:32:48.428766+00:00 ubuntu sshd[626195]: Failed password for invalid user ryusangwon from 51.159.77.50 port 12815 ssh2
2026-11-07T06:36:11.735737+00:00 ubuntu sshd[626451]: Invalid user haneulchan from 51.159.77.50 port 59480
2026-11-07T06:36:12.017134+00:00 ubuntu sshd[626451]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.159.77.50
2026-11-07T06:36:14.235496+00:00 ubuntu sshd[626451]: Failed password for invalid user haneulchan from 51.159.77.50 port 59480 ssh2
2026-11-07T06:39:31.943096+00:00 ubuntu sshd[626744]: Invalid user inspur from 51.159.77.50 port 35474
...
show less
2026-11-07T05:25:33.029757+00:00 ubuntu sshd[617877]: Failed password for invalid user ijun from 51.159.77.50 port 39354 ssh2
2026-11-07T05:28:54.388920+00:00 ubuntu sshd[618204]: Invalid user hyunjin from 51.159.77.50 port 44997
2026-11-07T05:28:54. ...
show more2026-11-07T05:25:33.029757+00:00 ubuntu sshd[617877]: Failed password for invalid user ijun from 51.159.77.50 port 39354 ssh2
2026-11-07T05:28:54.388920+00:00 ubuntu sshd[618204]: Invalid user hyunjin from 51.159.77.50 port 44997
2026-11-07T05:28:54.666650+00:00 ubuntu sshd[618204]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.159.77.50
2026-11-07T05:28:56.869008+00:00 ubuntu sshd[618204]: Failed password for invalid user hyunjin from 51.159.77.50 port 44997 ssh2
2026-11-07T05:32:19.793846+00:00 ubuntu sshd[618400]: Invalid user chanyeol from 51.159.77.50 port 61040
...
show less
2026-11-07T04:17:23.662096+00:00 ubuntu sshd[609682]: Failed password for invalid user isds from 51.159.77.50 port 20813 ssh2
2026-11-07T04:20:45.495861+00:00 ubuntu sshd[609895]: Invalid user navy from 51.159.77.50 port 51110
2026-11-07T04:20:45.782 ...
show more2026-11-07T04:17:23.662096+00:00 ubuntu sshd[609682]: Failed password for invalid user isds from 51.159.77.50 port 20813 ssh2
2026-11-07T04:20:45.495861+00:00 ubuntu sshd[609895]: Invalid user navy from 51.159.77.50 port 51110
2026-11-07T04:20:45.782117+00:00 ubuntu sshd[609895]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.159.77.50
2026-11-07T04:20:47.971410+00:00 ubuntu sshd[609895]: Failed password for invalid user navy from 51.159.77.50 port 51110 ssh2
2026-11-07T04:24:06.967961+00:00 ubuntu sshd[610075]: Invalid user git from 51.159.77.50 port 9736
...
show less
2026-11-07T03:07:59.095066+00:00 ubuntu sshd[601316]: Failed password for invalid user pochoi from 51.159.77.50 port 52467 ssh2
2026-11-07T03:11:14.956717+00:00 ubuntu sshd[601488]: Invalid user user2 from 51.159.77.50 port 20466
2026-11-07T03:11:15. ...
show more2026-11-07T03:07:59.095066+00:00 ubuntu sshd[601316]: Failed password for invalid user pochoi from 51.159.77.50 port 52467 ssh2
2026-11-07T03:11:14.956717+00:00 ubuntu sshd[601488]: Invalid user user2 from 51.159.77.50 port 20466
2026-11-07T03:11:15.244324+00:00 ubuntu sshd[601488]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.159.77.50
2026-11-07T03:11:17.965954+00:00 ubuntu sshd[601488]: Failed password for invalid user user2 from 51.159.77.50 port 20466 ssh2
2026-11-07T03:14:26.047173+00:00 ubuntu sshd[601642]: Invalid user lee1jun from 51.159.77.50 port 39357
...
show less
2026-11-07T01:57:59.798921+00:00 ubuntu sshd[592654]: Failed password for invalid user tyshim from 51.159.77.50 port 38299 ssh2
2026-11-07T02:01:18.167659+00:00 ubuntu sshd[592812]: Invalid user sjin from 51.159.77.50 port 62456
2026-11-07T02:01:18.4 ...
show more2026-11-07T01:57:59.798921+00:00 ubuntu sshd[592654]: Failed password for invalid user tyshim from 51.159.77.50 port 38299 ssh2
2026-11-07T02:01:18.167659+00:00 ubuntu sshd[592812]: Invalid user sjin from 51.159.77.50 port 62456
2026-11-07T02:01:18.454038+00:00 ubuntu sshd[592812]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.159.77.50
2026-11-07T02:01:20.664707+00:00 ubuntu sshd[592812]: Failed password for invalid user sjin from 51.159.77.50 port 62456 ssh2
2026-11-07T02:04:29.476372+00:00 ubuntu sshd[592976]: Invalid user hyeokgeose from 51.159.77.50 port 19965
...
show less
2026-11-07T00:49:14.446935+00:00 ubuntu sshd[583881]: Failed password for invalid user analog from 51.159.77.50 port 48023 ssh2
2026-11-07T00:52:23.500683+00:00 ubuntu sshd[584106]: Invalid user jjj from 51.159.77.50 port 41756
2026-11-07T00:52:23.77 ...
show more2026-11-07T00:49:14.446935+00:00 ubuntu sshd[583881]: Failed password for invalid user analog from 51.159.77.50 port 48023 ssh2
2026-11-07T00:52:23.500683+00:00 ubuntu sshd[584106]: Invalid user jjj from 51.159.77.50 port 41756
2026-11-07T00:52:23.772475+00:00 ubuntu sshd[584106]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.159.77.50
2026-11-07T00:52:25.988376+00:00 ubuntu sshd[584106]: Failed password for invalid user jjj from 51.159.77.50 port 41756 ssh2
2026-11-07T00:55:34.118412+00:00 ubuntu sshd[584330]: Invalid user rjs from 51.159.77.50 port 26976
...
show less
2026-11-06T23:41:32.498000+00:00 ubuntu sshd[524084]: Failed password for invalid user sun from 51.159.77.50 port 44453 ssh2
2026-11-06T23:44:39.091966+00:00 ubuntu sshd[524279]: Invalid user student15 from 51.159.77.50 port 29672
2026-11-06T23:44:39 ...
show more2026-11-06T23:41:32.498000+00:00 ubuntu sshd[524084]: Failed password for invalid user sun from 51.159.77.50 port 44453 ssh2
2026-11-06T23:44:39.091966+00:00 ubuntu sshd[524279]: Invalid user student15 from 51.159.77.50 port 29672
2026-11-06T23:44:39.381406+00:00 ubuntu sshd[524279]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.159.77.50
2026-11-06T23:44:42.014298+00:00 ubuntu sshd[524279]: Failed password for invalid user student15 from 51.159.77.50 port 29672 ssh2
2026-11-06T23:48:45.963326+00:00 ubuntu sshd[524474]: Invalid user teamstudent2 from 51.159.77.50 port 44519
...
show less
Brute-Force
SSH
Think this IP has been falsely reported? You may request to have the associated
reports reviewed and removed.
Request Takedown
