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 Apr 24th, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Suspicious recipients pattern with NLU credential theft indicators	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion Content analysis Header analysis Natural Language Understanding URL analysis
Suspicious recipients pattern with no Compauth pass and suspicious content	Sublime Security	3mo ago Jan 12th, 2026	Content analysis Computer Vision Header analysis Natural Language Understanding URL analysis URL screenshot
Suspicious request for financial information	Sublime Security	4mo ago Dec 6th, 2025	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	9mo ago Jul 16th, 2025	Credential Phishing Evasion Content analysis Sender analysis
Suspicious SharePoint file sharing	Sublime Security	8mo 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	3mo ago Jan 12th, 2026	Credential Phishing Spam Evasion Content analysis Sender analysis
Tax Form: W-8BEN solicitation	Sublime Security	2mo ago Feb 23rd, 2026	BEC/Fraud Credential Phishing Social engineering Content analysis Header analysis URL analysis
Truth Social infrastructure abuse via link redirect	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Malware/Ransomware Spam Evasion Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis
Twitter infrastructure abuse via link shortener	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Malware/Ransomware Spam Evasion Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis
Unicode QR code	Sublime Security	8mo ago Aug 25th, 2025	Credential Phishing Evasion Content analysis Sender analysis QR code analysis
URL with Unicode U+2044 (⁄) or U+2215 (∕) characters	@delivr_to	3mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering Content analysis URL analysis
Vendor impersonation: Thread hijacking with typosquat domain	Sublime Security	3mo 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	7mo ago Sep 5th, 2025	Callback Phishing BEC/Fraud Social engineering Impersonation: Brand Evasion Natural Language Understanding Content analysis Sender analysis HTML analysis
VIP impersonation: Fake thread with display name match, email mismatch	Sublime Security	22d ago Apr 3rd, 2026	BEC/Fraud Evasion Impersonation: VIP Social engineering Spoofing Content analysis Header analysis Sender analysis Whois
VIP Impersonation via Google Group relay with suspicious indicators	Sublime Security	5mo 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
VIP impersonation with BEC language (near match, untrusted sender)	Sublime Security	1mo ago Mar 25th, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Natural Language Understanding Sender analysis
VIP impersonation with charitable donation fraud	Sublime Security	5mo ago Nov 12th, 2025	BEC/Fraud Impersonation: Employee Impersonation: VIP Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
VIP impersonation with invoicing request	Sublime Security	2y ago Apr 23rd, 2024	BEC/Fraud Impersonation: VIP Content analysis Header analysis Natural Language Understanding
VIP impersonation with urgent request (strict match, untrusted sender)	Sublime Security	1mo ago Mar 25th, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Content analysis Natural Language Understanding Sender analysis
VIP impersonation with w2 request with reply-to mismatch	Sublime Security	1mo ago Mar 12th, 2026	BEC/Fraud Impersonation: VIP Content analysis Header analysis Natural Language Understanding
Xero infrastructure abuse	Sublime Security	5mo ago Nov 3rd, 2025	Credential Phishing Evasion Social engineering Content analysis Header analysis Natural Language Understanding URL analysis
Xero invoice abuse	Sublime Security	4mo ago Dec 17th, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Impersonation: Employee Social engineering Natural Language Understanding Content analysis Sender analysis

522 Rules

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