2020-08-03T17:25:10.4488591495-001 sshd[42365]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.12.242.130  user=root
2020-08-03T17:25:12.2177471495-001 sshd[42365]: Failed password for root from 103.12.242.130 port 45806 ssh2
2020-08-03T17:28:48.4489891495-001 sshd[42571]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.12.242.130  user=root
2020-08-03T17:28:50.4797321495-001 sshd[42571]: Failed password for root from 103.12.242.130 port 43510 ssh2
2020-08-03T17:32:29.2795571495-001 sshd[42739]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.12.242.130  user=root
2020-08-03T17:32:31.3153741495-001 sshd[42739]: Failed password for root from 103.12.242.130 port 41208 ssh2
...

2020-08-03T20:22:38.616222ionos.janbro.de sshd[94880]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=187.45.103.15  user=root
2020-08-03T20:22:40.301151ionos.janbro.de sshd[94880]: Failed password for root from 187.45.103.15 port 47532 ssh2
2020-08-03T20:25:14.439633ionos.janbro.de sshd[94890]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=187.45.103.15  user=root
2020-08-03T20:25:15.873999ionos.janbro.de sshd[94890]: Failed password for root from 187.45.103.15 port 38498 ssh2
2020-08-03T20:27:56.234116ionos.janbro.de sshd[94914]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=187.45.103.15  user=root
2020-08-03T20:27:57.908843ionos.janbro.de sshd[94914]: Failed password for root from 187.45.103.15 port 57705 ssh2
2020-08-03T20:30:40.207474ionos.janbro.de sshd[94934]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=187.45.1
...

Aug  4 00:14:38 journals sshd\[94088\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.55.37.132  user=root
Aug  4 00:14:41 journals sshd\[94088\]: Failed password for root from 106.55.37.132 port 38318 ssh2
Aug  4 00:16:31 journals sshd\[94240\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.55.37.132  user=root
Aug  4 00:16:34 journals sshd\[94240\]: Failed password for root from 106.55.37.132 port 59664 ssh2
Aug  4 00:18:23 journals sshd\[94334\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.55.37.132  user=root
...

fail2ban -- 52.152.172.146
...

2020-08-03T20:10:11.057518uwu-server sshd[2497780]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.185  user=root
2020-08-03T20:10:13.397695uwu-server sshd[2497780]: Failed password for root from 112.85.42.185 port 33426 ssh2
2020-08-03T20:10:11.057518uwu-server sshd[2497780]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.185  user=root
2020-08-03T20:10:13.397695uwu-server sshd[2497780]: Failed password for root from 112.85.42.185 port 33426 ssh2
2020-08-03T20:10:16.999787uwu-server sshd[2497780]: Failed password for root from 112.85.42.185 port 33426 ssh2
...

Aug  3 23:49:31 vps647732 sshd[28041]: Failed password for root from 178.128.144.227 port 40878 ssh2
...

Aug  3 23:04:43 ns381471 sshd[13261]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=132.232.59.78
Aug  3 23:04:45 ns381471 sshd[13261]: Failed password for invalid user Pa55@w0rd from 132.232.59.78 port 54352 ssh2

fail2ban detected brute force on sshd

Aug  4 00:52:13 [host] sshd[16146]: pam_unix(sshd:
Aug  4 00:52:15 [host] sshd[16146]: Failed passwor
Aug  4 00:56:26 [host] sshd[16312]: pam_unix(sshd:

2020-08-03 15:31:48.957048-0500  localhost smtpd[347]: NOQUEUE: reject: RCPT from wrqvckkq.outbound-mail.sendgrid.net[149.72.193.20]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=

2020-08-04T01:40:42.700961mail.broermann.family sshd[30770]: Failed password for root from 46.8.180.3 port 56988 ssh2
2020-08-04T01:51:10.541032mail.broermann.family sshd[31161]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=46.8.180.3  user=root
2020-08-04T01:51:12.239238mail.broermann.family sshd[31161]: Failed password for root from 46.8.180.3 port 59612 ssh2
2020-08-04T02:01:10.239572mail.broermann.family sshd[31634]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=46.8.180.3  user=root
2020-08-04T02:01:12.309095mail.broermann.family sshd[31634]: Failed password for root from 46.8.180.3 port 34004 ssh2
...

Aug  3 22:25:19 ns382633 sshd\[16777\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=36.110.111.51  user=root
Aug  3 22:25:21 ns382633 sshd\[16777\]: Failed password for root from 36.110.111.51 port 58646 ssh2
Aug  3 22:40:50 ns382633 sshd\[20035\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=36.110.111.51  user=root
Aug  3 22:40:52 ns382633 sshd\[20035\]: Failed password for root from 36.110.111.51 port 51332 ssh2
Aug  3 22:45:15 ns382633 sshd\[20863\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=36.110.111.51  user=root

Cowrie Honeypot: 3 unauthorised SSH/Telnet login attempts between 2020-08-03T23:14:31Z and 2020-08-03T23:26:55Z

Aug  4 00:28:08 jane sshd[6337]: Failed password for root from 106.54.48.208 port 56632 ssh2
...

Aug  4 01:50:34 vmd17057 sshd[27207]: Failed password for root from 59.172.6.244 port 59383 ssh2
...