B: Abusive ssh attack

Jun 29 10:17:48 plex sshd[12390]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=219.147.74.48  user=root
Jun 29 10:17:50 plex sshd[12390]: Failed password for root from 219.147.74.48 port 37658 ssh2

2020-06-29 05:56:42,145 fail2ban.actions        [937]: NOTICE  [sshd] Ban 222.127.97.91
2020-06-29 06:32:03,768 fail2ban.actions        [937]: NOTICE  [sshd] Ban 222.127.97.91
2020-06-29 07:08:30,456 fail2ban.actions        [937]: NOTICE  [sshd] Ban 222.127.97.91
2020-06-29 07:45:04,009 fail2ban.actions        [937]: NOTICE  [sshd] Ban 222.127.97.91
2020-06-29 08:22:15,629 fail2ban.actions        [937]: NOTICE  [sshd] Ban 222.127.97.91
...

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Jun 29 10:33:23 santamaria sshd\[19781\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.154  user=root
Jun 29 10:33:26 santamaria sshd\[19781\]: Failed password for root from 222.186.173.154 port 50138 ssh2
Jun 29 10:33:44 santamaria sshd\[19783\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.154  user=root
...

Jun 29 10:17:23 vmd48417 sshd[7733]: Failed password for root from 52.168.167.179 port 19856 ssh2

Jun 29 09:44:52 server sshd[13247]: Failed password for invalid user mongo from 165.227.176.208 port 36576 ssh2
Jun 29 10:00:53 server sshd[29833]: Failed password for invalid user mongo from 165.227.176.208 port 41138 ssh2
Jun 29 10:19:04 server sshd[16792]: Failed password for invalid user mongo from 165.227.176.208 port 45696 ssh2

Jun 29 10:45:55 debian-2gb-nbg1-2 kernel: \[15678999.299870\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=80.82.70.215 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=247 ID=35661 PROTO=TCP SPT=52141 DPT=14923 WINDOW=1024 RES=0x00 SYN URGP=0

2020-06-29 08:31:07 auth_plain authenticator failed for (User) [46.38.150.193]: 535 Incorrect authentication data (set_id=teknobyen-gw2@mail.csmailer.org)
2020-06-29 08:31:34 auth_plain authenticator failed for (User) [46.38.150.193]: 535 Incorrect authentication data (set_id=listings@mail.csmailer.org)
2020-06-29 08:32:10 auth_plain authenticator failed for (User) [46.38.150.193]: 535 Incorrect authentication data (set_id=cecilia@mail.csmailer.org)
2020-06-29 08:32:42 auth_plain authenticator failed for (User) [46.38.150.193]: 535 Incorrect authentication data (set_id=wesley@mail.csmailer.org)
2020-06-29 08:33:13 auth_plain authenticator failed for (User) [46.38.150.193]: 535 Incorrect authentication data (set_id=cvasquez@mail.csmailer.org)
...

[2020-06-29 04:31:20] NOTICE[1273] chan_sip.c: Registration from '' failed for '185.108.106.251:52194' - Wrong password
[2020-06-29 04:31:20] SECURITY[1288] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-06-29T04:31:20.078-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="6797",SessionID="0x7f31c03f7758",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.108.106.251/52194",Challenge="19850090",ReceivedChallenge="19850090",ReceivedHash="776629f203a5ede3eee3a6d4ae1a588e"
[2020-06-29 04:31:47] NOTICE[1273] chan_sip.c: Registration from '' failed for '185.108.106.251:61012' - Wrong password
[2020-06-29 04:31:47] SECURITY[1288] res_security_log.c: SecurityEvent="InvalidPassword",EventTV="2020-06-29T04:31:47.874-0400",Severity="Error",Service="SIP",EventVersion="2",AccountID="3914",SessionID="0x7f31c0045328",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/185.108
...

Invalid user denis from 120.237.118.144 port 48370

Brute forcing email accounts

Jun 29 07:46:52 vpn01 sshd[12020]: Failed password for root from 36.81.203.211 port 54510 ssh2
Jun 29 07:50:47 vpn01 sshd[12096]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=36.81.203.211
...

Jun 29 08:46:27 santamaria sshd\[18036\]: Invalid user yuri from 185.4.135.228
Jun 29 08:46:27 santamaria sshd\[18036\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=185.4.135.228
Jun 29 08:46:30 santamaria sshd\[18036\]: Failed password for invalid user yuri from 185.4.135.228 port 45940 ssh2
...

Jun 29 07:49:53 Ubuntu-1404-trusty-64-minimal sshd\[12330\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=13.75.123.140  user=root
Jun 29 07:49:56 Ubuntu-1404-trusty-64-minimal sshd\[12330\]: Failed password for root from 13.75.123.140 port 17992 ssh2
Jun 29 09:15:55 Ubuntu-1404-trusty-64-minimal sshd\[16882\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=13.75.123.140  user=root
Jun 29 09:15:57 Ubuntu-1404-trusty-64-minimal sshd\[16882\]: Failed password for root from 13.75.123.140 port 31072 ssh2
Jun 29 10:54:05 Ubuntu-1404-trusty-64-minimal sshd\[16656\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=13.75.123.140  user=root