2019-12-16T21:50:06.177012abusebot-5.cloudsearch.cf sshd\[8779\]: Invalid user trovato from 101.91.242.119 port 40748
2019-12-16T21:50:06.182690abusebot-5.cloudsearch.cf sshd\[8779\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=101.91.242.119
2019-12-16T21:50:07.949335abusebot-5.cloudsearch.cf sshd\[8779\]: Failed password for invalid user trovato from 101.91.242.119 port 40748 ssh2
2019-12-16T21:59:09.897131abusebot-5.cloudsearch.cf sshd\[8884\]: Invalid user penvenne from 101.91.242.119 port 33214

Dec 16 17:34:14 mail sshd\[36945\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.67.14.179  user=root
...

Dec 17 00:04:48 meumeu sshd[3853]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=35.240.253.241 
Dec 17 00:04:49 meumeu sshd[3853]: Failed password for invalid user ftpuser from 35.240.253.241 port 36707 ssh2
Dec 17 00:10:41 meumeu sshd[5182]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=35.240.253.241 
...

Dec 16 23:53:03 legacy sshd[18465]: Failed password for root from 222.186.175.212 port 24000 ssh2
Dec 16 23:53:15 legacy sshd[18465]: error: maximum authentication attempts exceeded for root from 222.186.175.212 port 24000 ssh2 [preauth]
Dec 16 23:53:20 legacy sshd[18473]: Failed password for root from 222.186.175.212 port 5982 ssh2
...

Dec 16 23:31:22 sticky sshd\[32602\]: Invalid user arindam from 81.250.173.152 port 50628
Dec 16 23:31:22 sticky sshd\[32602\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.250.173.152
Dec 16 23:31:25 sticky sshd\[32602\]: Failed password for invalid user arindam from 81.250.173.152 port 50628 ssh2
Dec 16 23:36:21 sticky sshd\[32660\]: Invalid user aletha from 81.250.173.152 port 57376
Dec 16 23:36:21 sticky sshd\[32660\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.250.173.152
...

Dec 16 22:54:50 [host] sshd[20171]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=119.29.87.183  user=root
Dec 16 22:54:52 [host] sshd[20171]: Failed password for root from 119.29.87.183 port 51486 ssh2
Dec 16 22:59:25 [host] sshd[20287]: Invalid user mohara from 119.29.87.183

Dec 16 22:59:15 MK-Soft-VM5 sshd[20132]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.54.139.117 
Dec 16 22:59:18 MK-Soft-VM5 sshd[20132]: Failed password for invalid user rabecca from 106.54.139.117 port 35992 ssh2
...

Dec 16 17:34:44 plusreed sshd[10116]: Invalid user wikberg from 106.13.110.74
...

" "

SSH authentication failure x 6 reported by Fail2Ban
...

Dec 16 23:51:40 ns381471 sshd[16735]: Failed password for root from 124.30.44.214 port 19166 ssh2

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These guys are email spamers.

$f2bV_matches

Dec 17 00:08:37 tuxlinux sshd[47623]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.223  user=root
...

Dec 17 00:20:36 sauna sshd[202764]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=59.112.252.241
Dec 17 00:20:39 sauna sshd[202764]: Failed password for invalid user peterp from 59.112.252.241 port 54974 ssh2
...