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 Oct 23rd, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Suspicious link to Looker Studio (lookerstudio.google.com) from a new and unsolicited sender	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion Social engineering Content analysis Sender analysis URL analysis
Suspicious message with unscannable Cloudflare link	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Content analysis Header analysis URL analysis Sender analysis
Suspicious message with unscannable Vercel link	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion Content analysis Header analysis Sender analysis URL analysis
Suspicious newly registered reply-to domain with engaging financial or urgent language	Sublime Security	1mo ago Sep 23rd, 2026	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis Whois
Suspicious recipient pattern and language with low reputation link to login	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis URL screenshot
Suspicious request for financial information	Sublime Security	1mo ago Sep 23rd, 2026	BEC/Fraud Free email provider Impersonation: Employee Impersonation: VIP Social engineering Content analysis Header analysis Sender analysis
Suspicious sender display name with long procedurally generated text blob	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion Content analysis Sender analysis
Suspicious SharePoint file sharing	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Free email provider Free file host OneNote PDF Content analysis Header analysis Sender analysis URL analysis
Suspicious subject with long procedurally generated text blob	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Spam Evasion Content analysis Sender analysis
Suspicious VBA macros from untrusted sender	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Macros File analysis Macro analysis Sender analysis
Truth Social infrastructure abuse via link redirect	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Malware/Ransomware Spam Evasion Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis
Twitter infrastructure abuse via link shortener	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Malware/Ransomware Spam Evasion Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis
Unicode QR code	Sublime Security	1y ago Aug 25th, 2025	Credential Phishing Evasion Content analysis Sender analysis QR code analysis
Unusually long local part from untrusted sender address	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Spam Evasion Header analysis Sender analysis
Vendor impersonation: Thread hijacking with typosquat domain	Sublime Security	9mo ago Jan 12th, 2026	BEC/Fraud Lookalike domain Social engineering Spoofing Content analysis Natural Language Understanding Sender analysis Whois
Venmo payment request abuse	Sublime Security	5mo ago May 4th, 2026	Callback Phishing BEC/Fraud Social engineering Impersonation: Brand Evasion Natural Language Understanding Content analysis Sender analysis HTML analysis
VIP / Executive impersonation in subject (untrusted)	Sublime Security	1mo ago Sep 23rd, 2026	BEC/Fraud Impersonation: VIP Header analysis Sender analysis
VIP / Executive impersonation (strict match, untrusted)	Sublime Security	8mo ago Feb 25th, 2026	BEC/Fraud Impersonation: VIP Header analysis Sender analysis
VIP impersonation: Fabricated thread history with fake VIP recipients	Sublime Security	3mo ago Jul 8th, 2026	BEC/Fraud Impersonation: VIP Social engineering Evasion Spoofing Content analysis Header analysis Sender analysis
VIP impersonation: Fake forwarded indicator with VIP recipient impersonation	Sublime Security	3mo ago Jul 7th, 2026	BEC/Fraud Impersonation: VIP Social engineering Evasion Content analysis Sender analysis
VIP impersonation: Fake thread with display name match, email mismatch	Sublime Security	6mo ago Apr 3rd, 2026	BEC/Fraud Evasion Impersonation: VIP Social engineering Spoofing Content analysis Header analysis Sender analysis Whois
VIP impersonation: Fake thread with name-in-brackets header artifact	Sublime Security	4d ago Oct 21st, 2026	BEC/Fraud Impersonation: VIP Social engineering Spoofing Content analysis Header analysis Sender analysis
VIP impersonation: Fake thread with VIPs missing email metadata	Sublime Security	2mo ago Aug 11th, 2026	BEC/Fraud Impersonation: VIP Social engineering Spoofing Natural Language Understanding Header analysis Content analysis Sender analysis
VIP impersonation: Invoice fraud with mobile device sign-off	Sublime Security	3d ago Oct 22nd, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Sender analysis
VIP impersonation: Payment handoff with VIP display name authored fake threads	Sublime Security	4d ago Oct 21st, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Natural Language Understanding Sender analysis Header analysis
VIP Impersonation via Google Group relay with suspicious indicators	Sublime Security	2mo ago Aug 5th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Evasion Free email provider Impersonation: Employee Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis
VIP Impersonation: VIP handoff with fake forwarded invoice thread	Sublime Security	2mo ago Aug 17th, 2026	BEC/Fraud Impersonation: VIP Social engineering Spoofing Out of band pivot Header analysis Content analysis URL analysis Sender analysis
VIP impersonation: VIP name within a delimited subject with fake previous threads	Sublime Security	9d ago Oct 16th, 2026	BEC/Fraud Impersonation: VIP Social engineering Spoofing Content analysis Sender analysis Header analysis
VIP impersonation: VIP payment redirect handoff via fake threads	Sublime Security	4d ago Oct 21st, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Natural Language Understanding Sender analysis Header analysis
VIP impersonation: VIP recipient of previous thread with HTML generator	Sublime Security	3mo ago Jul 7th, 2026	BEC/Fraud Impersonation: VIP Social engineering Evasion HTML analysis Content analysis Sender analysis
VIP impersonation with BEC language (near match, untrusted sender)	Sublime Security	1mo ago Sep 23rd, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Natural Language Understanding Sender analysis
VIP impersonation with charitable donation fraud	Sublime Security	4mo ago Jun 5th, 2026	BEC/Fraud Impersonation: Employee Impersonation: VIP Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
VIP impersonation with urgent request (strict match, untrusted sender)	Sublime Security	1mo ago Sep 23rd, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Content analysis Natural Language Understanding Sender analysis
VIP local_part impersonation from unsolicited sender	Sublime Security	1mo ago Sep 23rd, 2026	Impersonation: VIP Spoofing Header analysis Sender analysis
Xero invoice abuse	Sublime Security	10mo ago Dec 17th, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Impersonation: Employee Social engineering Natural Language Understanding Content analysis Sender analysis
X (Twitter) impersonation with credential phishing motives	Sublime Security	5mo ago May 15th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Header analysis Optical Character Recognition Natural Language Understanding Sender analysis

786 Rules

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