Jun 20 16:09:38 vps647732 sshd[11644]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.212.10
Jun 20 16:09:40 vps647732 sshd[11644]: Failed password for invalid user nginx from 142.93.212.10 port 43352 ssh2
...

Jun 20 15:27:10 h1745522 sshd[21937]: Invalid user abcd from 92.50.249.92 port 40108
Jun 20 15:27:10 h1745522 sshd[21937]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=92.50.249.92
Jun 20 15:27:10 h1745522 sshd[21937]: Invalid user abcd from 92.50.249.92 port 40108
Jun 20 15:27:12 h1745522 sshd[21937]: Failed password for invalid user abcd from 92.50.249.92 port 40108 ssh2
Jun 20 15:30:43 h1745522 sshd[22051]: Invalid user gb from 92.50.249.92 port 40280
Jun 20 15:30:43 h1745522 sshd[22051]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=92.50.249.92
Jun 20 15:30:43 h1745522 sshd[22051]: Invalid user gb from 92.50.249.92 port 40280
Jun 20 15:30:45 h1745522 sshd[22051]: Failed password for invalid user gb from 92.50.249.92 port 40280 ssh2
Jun 20 15:34:14 h1745522 sshd[22200]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=92.50.249.92  user=root
Jun 20 15:34:16 h1
...

SSH Bruteforce attack

2020-06-20 13:25:14 auth_plain authenticator failed for (User) [46.38.150.203]: 535 Incorrect authentication data (set_id=aspect@csmailer.org)
2020-06-20 13:25:57 auth_plain authenticator failed for (User) [46.38.150.203]: 535 Incorrect authentication data (set_id=slash@csmailer.org)
2020-06-20 13:26:39 auth_plain authenticator failed for (User) [46.38.150.203]: 535 Incorrect authentication data (set_id=yogesh@csmailer.org)
2020-06-20 13:27:22 auth_plain authenticator failed for (User) [46.38.150.203]: 535 Incorrect authentication data (set_id=guangzhou@csmailer.org)
2020-06-20 13:28:03 auth_plain authenticator failed for (User) [46.38.150.203]: 535 Incorrect authentication data (set_id=veronika@csmailer.org)
...

(sshd) Failed SSH login from 1.9.128.2 (MY/Malaysia/mail.sainswater.com): 12 in the last 3600 secs

Jun 20 15:46:14 srv01 postfix/smtpd\[23493\]: warning: unknown\[212.70.149.50\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 20 15:46:22 srv01 postfix/smtpd\[24451\]: warning: unknown\[212.70.149.50\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 20 15:46:23 srv01 postfix/smtpd\[26149\]: warning: unknown\[212.70.149.50\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 20 15:46:23 srv01 postfix/smtpd\[29902\]: warning: unknown\[212.70.149.50\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 20 15:46:46 srv01 postfix/smtpd\[23493\]: warning: unknown\[212.70.149.50\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...

Jun 20 16:01:42 abendstille sshd\[26872\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.172  user=root
Jun 20 16:01:45 abendstille sshd\[26872\]: Failed password for root from 112.85.42.172 port 61829 ssh2
Jun 20 16:01:48 abendstille sshd\[26872\]: Failed password for root from 112.85.42.172 port 61829 ssh2
Jun 20 16:01:52 abendstille sshd\[26872\]: Failed password for root from 112.85.42.172 port 61829 ssh2
Jun 20 16:01:56 abendstille sshd\[26872\]: Failed password for root from 112.85.42.172 port 61829 ssh2
...

SMB Server BruteForce Attack

2020-06-20 13:53:55 auth_plain authenticator failed for (User) [46.38.145.6]: 535 Incorrect authentication data (set_id=stype@csmailer.org)
2020-06-20 13:54:37 auth_plain authenticator failed for (User) [46.38.145.6]: 535 Incorrect authentication data (set_id=gts@csmailer.org)
2020-06-20 13:55:20 auth_plain authenticator failed for (User) [46.38.145.6]: 535 Incorrect authentication data (set_id=img-m@csmailer.org)
2020-06-20 13:56:03 auth_plain authenticator failed for (User) [46.38.145.6]: 535 Incorrect authentication data (set_id=termine@csmailer.org)
2020-06-20 13:56:47 auth_plain authenticator failed for (User) [46.38.145.6]: 535 Incorrect authentication data (set_id=e5@csmailer.org)
...

2020-06-20 03:04:41 dovecot_login authenticator failed for \(User\) \[185.143.72.34\]: 535 Incorrect authentication data \(set_id=webaccess@no-server.de\)
2020-06-20 03:05:20 dovecot_login authenticator failed for \(User\) \[185.143.72.34\]: 535 Incorrect authentication data \(set_id=savebig@no-server.de\)
2020-06-20 03:05:33 dovecot_login authenticator failed for \(User\) \[185.143.72.34\]: 535 Incorrect authentication data \(set_id=savebig@no-server.de\)
2020-06-20 03:05:59 dovecot_login authenticator failed for \(User\) \[185.143.72.34\]: 535 Incorrect authentication data \(set_id=savebig@no-server.de\)
2020-06-20 03:07:03 dovecot_login authenticator failed for \(User\) \[185.143.72.34\]: 535 Incorrect authentication data \(set_id=casino@no-server.de\)
...

Jun 20 14:28:19 mellenthin postfix/smtpd[28044]: NOQUEUE: reject: RCPT from unknown[193.56.28.141]: 554 5.7.1 Service unavailable; Client host [193.56.28.141] blocked using zen.spamhaus.org; https://www.spamhaus.org/query/ip/193.56.28.141; from= to= proto=SMTP helo=<185.244.193.35>

Jun 20 15:42:51 pve1 sshd[26074]: Failed password for root from 218.92.0.252 port 28200 ssh2
Jun 20 15:42:55 pve1 sshd[26074]: Failed password for root from 218.92.0.252 port 28200 ssh2
...

Jun 20 15:51:42 home sshd[1794]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.22.27
Jun 20 15:51:44 home sshd[1794]: Failed password for invalid user ewa from 104.248.22.27 port 47812 ssh2
Jun 20 15:54:58 home sshd[2092]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.22.27
...

"Unauthorized connection attempt on SSHD detected"

Jun 20 09:19:20 ws22vmsma01 sshd[159682]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.99.66.193
Jun 20 09:19:22 ws22vmsma01 sshd[159682]: Failed password for invalid user lyl from 167.99.66.193 port 34810 ssh2
...