Sublime Core Feed

This repo contains open-source Rules for Sublime, a free and open platform for detecting and preventing email attacks like BEC, malware, and credential phishing.

Sublime Security

Last updated Mar 10th, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Suspicious sender display name with long procedurally generated text blob	Sublime Security	7mo ago Jul 16th, 2025	Credential Phishing Evasion Content analysis Sender analysis	/feeds/core/detection-rules/suspicious-sender-display-name-with-long-procedurally-generated-text-blob-2a40b043
Suspicious SharePoint file sharing	Sublime Security	7mo ago Aug 5th, 2025	Credential Phishing Free email provider Free file host OneNote PDF Content analysis Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/suspicious-sharepoint-file-sharing-971c3d9c
Suspicious subject with long procedurally generated text blob	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Spam Evasion Content analysis Sender analysis	/feeds/core/detection-rules/suspicious-subject-with-long-procedurally-generated-text-blob-e819593d
Suspicious VBA macros from untrusted sender	Sublime Security	1mo ago Jan 12th, 2026	Malware/Ransomware Macros File analysis Macro analysis Sender analysis	/feeds/core/detection-rules/suspicious-vba-macros-from-untrusted-sender-37cec120
Truth Social infrastructure abuse via link redirect	Sublime Security	7mo ago Jul 16th, 2025	Credential Phishing Malware/Ransomware Spam Evasion Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis	/feeds/core/detection-rules/truth-social-infrastructure-abuse-via-link-redirect-aaaa30a8
Twitter infrastructure abuse via link shortener	Sublime Security	7mo ago Jul 16th, 2025	Credential Phishing Malware/Ransomware Spam Evasion Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis	/feeds/core/detection-rules/twitter-infrastructure-abuse-via-link-shortener-99ca165e
Unicode QR code	Sublime Security	6mo ago Aug 25th, 2025	Credential Phishing Evasion Content analysis Sender analysis QR code analysis	/feeds/core/detection-rules/unicode-qr-code-1a0bdd25
Unusually long local part from untrusted sender address	Sublime Security	7mo ago Aug 5th, 2025	Credential Phishing Spam Evasion Header analysis Sender analysis	/feeds/core/detection-rules/unusually-long-local-part-from-untrusted-sender-address-91a9cd45
Vendor impersonation: Thread hijacking with typosquat domain	Sublime Security	1mo ago Jan 12th, 2026	BEC/Fraud Lookalike domain Social engineering Spoofing Content analysis Natural Language Understanding Sender analysis Whois	/feeds/core/detection-rules/vendor-impersonation-thread-hijacking-with-typosquat-domain-9c2f38ed
Venmo payment request abuse	Sublime Security	6mo ago Sep 5th, 2025	Callback Phishing BEC/Fraud Social engineering Impersonation: Brand Evasion Natural Language Understanding Content analysis Sender analysis HTML analysis	/feeds/core/detection-rules/venmo-payment-request-abuse-4450639a
VIP / Executive impersonation in subject (untrusted)	Sublime Security	6mo ago Aug 14th, 2025	BEC/Fraud Impersonation: VIP Header analysis Sender analysis	/feeds/core/detection-rules/vip-executive-impersonation-in-subject-untrusted-0a641fe5
VIP / Executive impersonation (strict match, untrusted)	Sublime Security	13d ago Feb 25th, 2026	BEC/Fraud Impersonation: VIP Header analysis Sender analysis	/feeds/core/detection-rules/vip-executive-impersonation-strict-match-untrusted-e42c84b7
VIP impersonation: Fake thread with display name match, email mismatch	Sublime Security	1mo ago Jan 12th, 2026	BEC/Fraud Evasion Impersonation: VIP Social engineering Spoofing Content analysis Header analysis Sender analysis Whois	/feeds/core/detection-rules/vip-impersonation-fake-thread-with-display-name-match-email-mismatch-11cc3e28
VIP Impersonation via Google Group relay with suspicious indicators	Sublime Security	3mo ago Nov 12th, 2025	BEC/Fraud Credential Phishing Malware/Ransomware Evasion Free email provider Impersonation: Employee Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/vip-impersonation-via-google-group-relay-with-suspicious-indicators-57f9cd3b
VIP impersonation with BEC language (near match, untrusted sender)	Sublime Security	1mo ago Jan 12th, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/vip-impersonation-with-bec-language-near-match-untrusted-sender-303081da
VIP impersonation with charitable donation fraud	Sublime Security	3mo ago Nov 12th, 2025	BEC/Fraud Impersonation: Employee Impersonation: VIP Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/vip-impersonation-with-charitable-donation-fraud-35a56b8e
VIP impersonation with urgent request (strict match, untrusted sender)	Sublime Security	1mo ago Jan 12th, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/vip-impersonation-with-urgent-request-strict-match-untrusted-sender-0dd1fa60
VIP local_part impersonation from unsolicited sender	Sublime Security	6mo ago Aug 12th, 2025	Impersonation: VIP Spoofing Header analysis Sender analysis	/feeds/core/detection-rules/vip-localpart-impersonation-from-unsolicited-sender-74035fdc
Xero invoice abuse	Sublime Security	2mo ago Dec 17th, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Impersonation: Employee Social engineering Natural Language Understanding Content analysis Sender analysis	/feeds/core/detection-rules/xero-invoice-abuse-6538c600
X (Twitter) impersonation with credential phishing motives	Sublime Security	7mo ago Aug 5th, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Header analysis Optical Character Recognition Natural Language Understanding Sender analysis	/feeds/core/detection-rules/x-twitter-impersonation-with-credential-phishing-motives-0b60dca6

620 Rules

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