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191.37.11.75

Recent Activity

Abuse Confidence Score

30% Elevated

34 reports

20 reporters · latest 6 days ago

ISP: DESEMPENHO PROVEDOR DE INTERNET
Usage Type: Fixed Line ISP
ASN: AS263348
Domain Name: performanceinfo.com.br
Country: 🇧🇷 Brazil
City: Cantagalo, Parana

ISP, Usage Type, and Location provided by IPInfo. Updated weekly.

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Abuse Reports

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Total reports

34 from 20 distinct reporters

First reported

June 8th 2025

Most recent report

6 days ago

Last 60 days

Top reporter locations 🇮🇩 Indonesia 6 🇺🇾 Uruguay 2 🇩🇪 Germany 1

Most common categories Web App Attack 6 Brute-Force 6 Hacking 6

Recent reports We have received reports of abusive activity from this IP address within the last week. It is potentially still actively engaged in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇬🇧 D3monite	2026-11-07 13:52:55 UTC · (6 days ago)	Attempted Brute Force (dovecot)	Brute-Force
Anonymous	2026-11-07 10:20:33 UTC · (1 week ago)	Authentication failure	Brute-Force
Anonymous	2026-11-05 22:34:25 UTC · (1 week ago)	Authentication failure	Brute-Force
Anonymous	2026-10-29 10:26:03 UTC · (2 weeks ago)	fail2ban: brute-force/credential spraying against mail (IMAP/POP/webmail) — rmnet.it	Brute-Force
🇹🇷 Jova	2026-10-29 09:36:17 UTC · (2 weeks ago)	Part of a distributed password attack on a mail account (IMAP logins from many IPs).	Brute-Force
🇩🇪 yitzhaq	2026-10-28 11:01:52 UTC · (2 weeks ago)	Oct 28 12:01:36 [host] vpopmail[3746415]: vchkpw-imaps: vpopmail user not found anthony@:191.37.11.75 Oct 28 12:01:44 [host] vpopmail[3746498]: vchkpw-imaps: vpopmail user not found anthony@:191.37.11.75	Brute-Force
🇮🇩 sockominfo	2026-10-24 06:00:53 UTC · (3 weeks ago)	Email: Login failures from Bad Reputation IP: 191.37.11.75. Threat Score: 5.7/10 (MEDIUM). Confidence: 40%. CVSS v3.1: 4.3/10 (Medium). CVSS Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L. Bayesian Probability: 76%. MITRE ATT&CK: T1566 (Phishin ... show more Email: Login failures from Bad Reputation IP: 191.37.11.75. Threat Score: 5.7/10 (MEDIUM). Confidence: 40%. CVSS v3.1: 4.3/10 (Medium). CVSS Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L. Bayesian Probability: 76%. MITRE ATT&CK: T1566 (Phishing). Tactic: TA0001. Freshness: Moderate. 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 show less	Hacking Web App Attack
🇮🇩 sockominfo	2026-10-24 05:00:53 UTC · (3 weeks ago)	Email: Login failures from Bad Reputation IP: 191.37.11.75. Threat Score: 5.8/10 (MEDIUM). Confidence: 40%. CVSS v3.1: 4.3/10 (Medium). CVSS Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L. Bayesian Probability: 76%. MITRE ATT&CK: T1566 (Phishin ... show more Email: Login failures from Bad Reputation IP: 191.37.11.75. Threat Score: 5.8/10 (MEDIUM). Confidence: 40%. CVSS v3.1: 4.3/10 (Medium). CVSS Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L. Bayesian Probability: 76%. MITRE ATT&CK: T1566 (Phishing). Tactic: TA0001. Freshness: Moderate. 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 show less	Hacking Web App Attack
🇮🇩 sockominfo	2026-10-24 04:00:53 UTC · (3 weeks ago)	Email: Login failures from Bad Reputation IP: 191.37.11.75. Threat Score: 5.9/10 (MEDIUM). Confidence: 40%. CVSS v3.1: 4.3/10 (Medium). CVSS Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L. Bayesian Probability: 77%. MITRE ATT&CK: T1566 (Phishin ... show more Email: Login failures from Bad Reputation IP: 191.37.11.75. Threat Score: 5.9/10 (MEDIUM). Confidence: 40%. CVSS v3.1: 4.3/10 (Medium). CVSS Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L. Bayesian Probability: 77%. MITRE ATT&CK: T1566 (Phishing). Tactic: TA0001. Freshness: Moderate. 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 show less	Hacking Web App Attack
🇮🇩 sockominfo	2026-10-24 03:00:53 UTC · (3 weeks ago)	Email: Login failures from Bad Reputation IP: 191.37.11.75. Threat Score: 6/10 (MEDIUM). Confidence: 40%. CVSS v3.1: 4.3/10 (Medium). CVSS Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L. Bayesian Probability: 77%. MITRE ATT&CK: T1566 (Phishing) ... show more Email: Login failures from Bad Reputation IP: 191.37.11.75. Threat Score: 6/10 (MEDIUM). Confidence: 40%. CVSS v3.1: 4.3/10 (Medium). CVSS Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L. Bayesian Probability: 77%. MITRE ATT&CK: T1566 (Phishing). 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 show less	Hacking Web App Attack
🇮🇩 sockominfo	2026-10-24 02:00:09 UTC · (3 weeks ago)	Email: Login failures from Bad Reputation IP: 191.37.11.75. Threat Score: 4.5/10 (MEDIUM). Reported by TangerangKota-CSIRT	Hacking Web App Attack
🇮🇩 sockominfo	2026-10-24 01:00:09 UTC · (3 weeks ago)	Email: Login failures from Bad Reputation IP: 191.37.11.75. Threat Score: 4.6/10 (MEDIUM). Reported by TangerangKota-CSIRT	Hacking Web App Attack
🇺🇸 TTWebhosting	2026-06-22 11:59:56 UTC · (4 months ago)	(imapd) Failed IMAP login from 191.37.11.75 (BR/Brazil/Paraná/Cantagalo/-/[AS263348 DESEMPENHO PROVEDOR DE INTERNET]): 2 in the last 3600 secs	Brute-Force Port Scan Hacking
🇩🇪 it-ngo.com	2026-06-22 00:39:34 UTC · (4 months ago)	RdpGuard detected brute-force attempt on POP3	Brute-Force
🇩🇪 FeG Deutschland	2026-06-21 10:32:07 UTC · (4 months ago)	Mail: - login with unknown user - bruteforce	Brute-Force

Showing 1 to 15 of 34 reports

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