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๐ท๐ด
ICT
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Feb 20 09:53:26 acad-icht postfix/smtpd[42792]: warning: unknown[178.16.55.189]: SASL LOGIN authenti ...
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Feb 20 09:53:26 acad-icht postfix/smtpd[42792]: warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure
Feb 20 09:53:31 acad-icht postfix/smtpd[42792]: warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure
Feb 20 09:53:34 acad-icht postfix/smtpd[42792]: warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure
Feb 20 09:53:37 acad-icht postfix/smtpd[42792]: warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure
Feb 20 09:53:41 acad-icht postfix/smtpd[42792]: warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure
...
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Brute-Force
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Anonymous
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Failed login attempt detected by Fail2Ban in plesk-postfix jail
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Brute-Force
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๐จ๐ฟ
lp
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Email account brute force: 5 attempts were recorded from 178.16.55.189
2026-02-19T20:59:28+01:00 war ...
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Email account brute force: 5 attempts were recorded from 178.16.55.189
2026-02-19T20:59:28+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-19T20:59:42+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-19T20:59:43+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-19T20:59:45+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-19T20:59:46+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
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Brute-Force
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๐ง๐ท
SvrAdmin
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[101] (smtpauth) Failed SMTP AUTH login from 178.16.55.189 (US/United States/-): 5 in the last 3600 ...
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[101] (smtpauth) Failed SMTP AUTH login from 178.16.55.189 (US/United States/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-02-19 02:10:56 dovecot_login authenticator failed for H=(CgPrJz28oL) [178.16.55.189]:60014: 535 Incorrect authentication data ([email protected])
2026-02-19 02:11:05 dovecot_login authenticator failed for H=(DQvMnhAf) [178.16.55.189]:52305: 535 Incorrect authentication data ([email protected])
2026-02-19 02:11:17 dovecot_login authenticator failed for H=(CbAqDf) [178.16.55.189]:55254: 535 Incorrect authentication data ([email protected])
2026-02-19 02:11:36 dovecot_login authenticator failed for H=(7Ipd1CPUL) [178.16.55.189]:50744: 535 Incorrect authentication data ([email protected])
2026-02-19 02:11:55 dovecot_login authenticator failed for H=(0i8CvAzDO) [178.16.55.189]:61149: 535 Incorrect authentication data ([email protected])
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Port Scan
Hacking
Brute-Force
Exploited Host
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๐ซ๐ท
UM3
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Exim Auth Failed
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Brute-Force
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๐จ๐ฟ
lp
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Email account brute force: 5 attempts were recorded from 178.16.55.189
2026-02-18T06:28:36+01:00 war ...
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Email account brute force: 5 attempts were recorded from 178.16.55.189
2026-02-18T06:28:36+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-18T06:28:37+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-18T06:28:38+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-18T06:28:39+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-18T06:28:41+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
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Brute-Force
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๐ฉ๐ช
samba.org
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spam (f2b h2)
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Brute-Force
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Anonymous
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Portscan: TCP/587 (2x), TCP/465 (2x), TCP/25 (2x)
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Port Scan
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Anonymous
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SMTP brute force - auth failed
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Brute-Force
Exploited Host
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๐จ๐ฟ
lp
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Email account brute force: 6 attempts were recorded from 178.16.55.189
2026-02-16T16:06:35+01:00 war ...
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Email account brute force: 6 attempts were recorded from 178.16.55.189
2026-02-16T16:06:35+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-16T16:06:36+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-16T16:06:37+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-16T16:06:38+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-16T16:06:38+01:00 warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-02-16T16:06:39+01:00 warning: unknown[178.16.55.189]: SASL LOGIN
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Brute-Force
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๐ณ๐ฑ
Alboweb B.V.
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SMTP brute-force detected by Fail2Ban in plesk-postfix jail
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Email Spam
Brute-Force
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๐ฌ๐ง
cg-design.co.uk
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(smtpauth) Failed SMTP AUTH login from 178.16.55.189 (US/United States/-)
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Brute-Force
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Anonymous
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RdpGuard detected brute-force attempt on SMTP
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Brute-Force
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๐ท๐ด
ICT
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Feb 15 17:02:10 acad-icht postfix/smtpd[133970]: warning: unknown[178.16.55.189]: SASL LOGIN authent ...
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Feb 15 17:02:10 acad-icht postfix/smtpd[133970]: warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure
Feb 15 17:02:13 acad-icht postfix/smtpd[133970]: warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure
Feb 15 17:02:16 acad-icht postfix/smtpd[133970]: warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure
Feb 15 17:02:19 acad-icht postfix/smtpd[133970]: warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure
Feb 15 17:02:21 acad-icht postfix/smtpd[133970]: warning: unknown[178.16.55.189]: SASL LOGIN authentication failed: authentication failure
...
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Brute-Force
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Anonymous
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10x Postfix SASL LOGIN authentication failed
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Brute-Force
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