🇬🇧
iss-security-operations
2026-08-06 16:00:14
(2 weeks ago)
Seen attempting a bruteforce against SMTP services
Brute-Force
🇮🇩
sockominfo
2026-08-06 10:00:53
(2 weeks ago)
Postfix: Multiple SASL authentication failures.. Threat Score: 7.3/10 (HIGH). Confidence: 50%. CVSS ...
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Postfix: Multiple SASL authentication failures.. Threat Score: 7.3/10 (HIGH). Confidence: 50%. CVSS v3.1: 6.3/10 (Medium). CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L. Bayesian Probability: 87%. MITRE ATT&CK: T1110 (Brute Force). Tactic: TA0001. Freshness: Fresh. Source Reputation: UNKNOWN. Methodology: CVSS 3.1 + Bayesian + Temporal + Environmental + MITRE ATT&CK + OWASP. Standards: ISO/IEC 27065:2022, NIST SP 800-30, IEEE S&P 2020. Reported by TangerangKota-CSIRT. Status: MALICIOUS
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Hacking
Exploited Host
🇺🇸
bigscoots.com
2026-08-06 09:26:45
(2 weeks ago)
(smtpauth) Failed SMTP AUTH login from 212.30.33.12 (ES/Spain/-): 5 in the last 3600 secs; Ports: 25 ...
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(smtpauth) Failed SMTP AUTH login from 212.30.33.12 (ES/Spain/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-08-06 05:25:34 dovecot_login authenticator failed for H=(N7Cc7lMIPV) [212.30.33.12]:19696: 535 Incorrect authentication data (set_id=hello)
2026-08-06 05:25:43 dovecot_login authenticator failed for H=(rlO1Sr) [212.30.33.12]:31016: 535 Incorrect authentication data ([email protected] )
2026-08-06 05:26:10 dovecot_login authenticator failed for H=(XpmmsP) [212.30.33.12]:52540: 535 Incorrect authentication data (set_id=hello)
2026-08-06 05:26:15 dovecot_login authenticator failed for H=(26l1LCKDk) [212.30.33.12]:36163: 535 Incorrect authentication data ([email protected] )
2026-08-06 05:26:41 dovecot_login authenticator failed for H=(vAZw3vc) [212.30.33.12]:50493: 535 Incorrect authentication data (set_id=hello)
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Brute-Force
SSH
🇮🇩
sockominfo
2026-08-06 09:00:09
(2 weeks ago)
Postfix: Multiple SASL authentication failures.. Threat Score: 5.5/10 (MEDIUM). Reported by Tangeran ...
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Postfix: Multiple SASL authentication failures.. Threat Score: 5.5/10 (MEDIUM). Reported by TangerangKota-CSIRT
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Hacking
Web App Attack
🇮🇩
xveil
2026-08-06 08:28:50
(2 weeks ago)
2026-08-06T15:28:48.061138 mail-honeypot postfix/submission/smtpd[17815]: warning: unknown[212.30.33 ...
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2026-08-06T15:28:48.061138 mail-honeypot postfix/submission/smtpd[17815]: warning: unknown[212.30.33.12]: SASL LOGIN authentication failed: authentication failure
...
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Brute-Force
🇿🇦
hostsec_za
2026-08-06 07:04:01
(2 weeks ago)
SMTP Auth Attack. 32 failed logins in 1 hour.
Brute-Force
2026-08-05 14:30:04
(2 weeks ago)
10x Postfix SASL LOGIN authentication failed
Brute-Force
🇦🇪
Open Code
2026-08-05 10:26:07
(2 weeks ago)
[acnfplwa] fail2ban: fail2ban exim (jail=exim, score=0) (via fail2ban)
Brute-Force
SSH
🇺🇸
bigscoots.com
2026-08-05 05:47:09
(2 weeks ago)
(smtpauth) Failed SMTP AUTH login from 212.30.33.12 (ES/Spain/-): 5 in the last 3600 secs; Ports: 25 ...
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(smtpauth) Failed SMTP AUTH login from 212.30.33.12 (ES/Spain/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-08-05 01:45:57 dovecot_login authenticator failed for H=(wxh5M3C) [212.30.33.12]:32554: 535 Incorrect authentication data (set_id=ann)
2026-08-05 01:46:06 dovecot_login authenticator failed for H=(vcx5kaxE) [212.30.33.12]:28478: 535 Incorrect authentication data ([email protected] )
2026-08-05 01:46:33 dovecot_login authenticator failed for H=(HzKDC46) [212.30.33.12]:10174: 535 Incorrect authentication data (set_id=ann)
2026-08-05 01:46:38 dovecot_login authenticator failed for H=(G5Bc5d) [212.30.33.12]:35032: 535 Incorrect authentication data ([email protected] )
2026-08-05 01:47:04 dovecot_login authenticator failed for H=(S4KbHeub) [212.30.33.12]:24721: 535 Incorrect authentication data (set_id=ann)
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Brute-Force
SSH
🇦🇺
electronico
2026-08-05 03:56:47
(3 weeks ago)
2026-08-05T14:56:09.699295+11:00 mail1 postfix/submission/smtpd[1529921]: lost connection after AUTH ...
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2026-08-05T14:56:09.699295+11:00 mail1 postfix/submission/smtpd[1529921]: lost connection after AUTH from unknown[212.30.33.12]
2026-08-05T14:56:19.779317+11:00 mail1 postfix/submission/smtpd[1529921]: lost connection after AUTH from unknown[212.30.33.12]
2026-08-05T14:56:47.501786+11:00 mail1 postfix/submission/smtpd[1529921]: lost connection after AUTH from unknown[212.30.33.12]
...
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Brute-Force
Email Spam
🇩🇪
zumbo.net
2026-08-04 20:09:44
(3 weeks ago)
Brute-Force
🇨🇿
unhfree.net
2026-08-04 17:02:17
(3 weeks ago)
Brute-Force
Exploited Host
🇩🇪
tvnl.eu
2026-08-04 15:40:04
(3 weeks ago)
Banned by fail2ban on <hostname> for jail dovecot. Attempts: 5
Brute-Force
🇫🇮
notelseit
2026-08-04 15:23:03
(3 weeks ago)
2026-08-04T17:23:01.135665+02:00 mail postfix/submission/smtpd[2195267]: disconnect from unknown[212 ...
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2026-08-04T17:23:01.135665+02:00 mail postfix/submission/smtpd[2195267]: disconnect from unknown[212.30.33.12] ehlo=2 starttls=1 auth=0/1 commands=3/4
2026-08-04T17:23:01.136071+02:00 mail postfix/submission/smtpd[2195269]: disconnect from unknown[212.30.33.12] ehlo=2 starttls=1 auth=0/1 commands=3/4
2026-08-04T17:23:03.139306+02:00 mail postfix/submission/smtpd[2195267]: disconnect from unknown[212.30.33.12] ehlo=2 starttls=1 auth=0/1 commands=3/4
...
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Brute-Force
Email Spam
🇮🇩
sockominfo
2026-08-03 23:00:53
(3 weeks ago)
Postfix: Multiple SASL authentication failures.. Threat Score: 7.3/10 (HIGH). Confidence: 50%. CVSS ...
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Postfix: Multiple SASL authentication failures.. Threat Score: 7.3/10 (HIGH). Confidence: 50%. CVSS v3.1: 6.3/10 (Medium). CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L. Bayesian Probability: 87%. MITRE ATT&CK: T1110 (Brute Force). Tactic: TA0001. Freshness: Very Fresh. Source Reputation: UNKNOWN. Methodology: CVSS 3.1 + Bayesian + Temporal + Environmental + MITRE ATT&CK + OWASP. Standards: ISO/IEC 27065:2022, NIST SP 800-30, IEEE S&P 2020. Reported by TangerangKota-CSIRT. Status: MALICIOUS
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Hacking
Exploited Host