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

Rule Name & Severity	Author	Last Updated	Labels
Reconnaissance: Empty message from uncommon sender	Sublime Security	1mo ago Feb 25th, 2026	Spam Evasion Social engineering Content analysis Header analysis
Self-sent fake PDF attachment with misleading link	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion Free subdomain host Social engineering Content analysis URL analysis Sender analysis
Service abuse: Adobe Creative Cloud share from an unsolicited sender address	Sublime Security	6mo ago Oct 22nd, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service abuse: Apple TestFlight with suspicious developer reference	Sublime Security	2mo ago Feb 6th, 2026	Spam Social engineering Content analysis HTML analysis Natural Language Understanding Sender analysis URL analysis
Service abuse: Google classroom solicitation	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing BEC/Fraud Impersonation: Brand Out of band pivot Social engineering Content analysis Header analysis Sender analysis
Service abuse: Google Firebase sender address with suspicious content	Sublime Security	23d ago Apr 2nd, 2026	Spam Credential Phishing Free subdomain host Social engineering Content analysis Header analysis HTML analysis Natural Language Understanding Sender analysis URL analysis Whois
Service abuse: HelloSign from an unsolicited sender address	Sublime Security	8mo ago Aug 5th, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service Abuse: HelloSign share with suspicious sender or document name	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing BEC/Fraud Evasion Social engineering Sender analysis Header analysis Content analysis
Service abuse: HungerRush domain with SendGrid tracking targeting ProtonMail	Sublime Security	1mo ago Mar 4th, 2026	BEC/Fraud Evasion Sender analysis HTML analysis Content analysis
Service abuse: Meetup.com redirect with brand impersonation	Sublime Security	10d ago Apr 15th, 2026	Credential Phishing Open redirect Impersonation: Brand Evasion URL analysis HTML analysis Content analysis Sender analysis
Service abuse: Payoneer callback scam	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing BEC/Fraud Evasion Social engineering Sender analysis Header analysis Content analysis
Service abuse: QuickBooks notification with suspicious comments	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Credential Phishing BEC/Fraud Evasion Social engineering Content analysis Sender analysis Header analysis
Service abuse: Substack credential theft with confusable characters and branded button redirects	Sublime Security	1mo ago Mar 19th, 2026	Credential Phishing Social engineering Evasion Sender analysis HTML analysis Natural Language Understanding URL analysis
Service abuse: Suspicious Zoom Docs link	Sublime Security	4mo ago Dec 2nd, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service abuse: Trello board invitation with VIP impersonation	Sublime Security	2mo ago Feb 3rd, 2026	Credential Phishing Impersonation: VIP Social engineering Content analysis Header analysis HTML analysis Sender analysis
Sharepoint link likely unrelated to sender	Sublime Security	3mo ago Jan 12th, 2026	BEC/Fraud Credential Phishing Impersonation: Employee Lookalike domain OneNote PDF Social engineering URL analysis Sender analysis Header analysis HTML analysis
Spam: Attendee list solicitation	Sublime Security	7mo ago Aug 29th, 2025	Spam Content analysis Sender analysis
Spam: Campaign with excessive space/char obfuscation and free file hosted link	Sublime Security	3mo ago Jan 12th, 2026	Spam Free file host Content analysis Sender analysis
Spam: Commonly observed formatting of unauthorized free giveaways	Sublime Security	3mo ago Jan 14th, 2026	Spam Impersonation: Brand Social engineering Content analysis HTML analysis Sender analysis URL analysis
Spam: Fake photo share	Sublime Security	5mo ago Nov 8th, 2025	Spam Evasion Social engineering Content analysis Sender analysis URL analysis Whois
Spam/fraud: Predatory journal/research paper request	Sublime Security	5mo ago Nov 3rd, 2025	BEC/Fraud Spam Social engineering Impersonation: Brand Lookalike domain Evasion Natural Language Understanding Content analysis Sender analysis URL analysis Whois
Spam: Item giveaway spam template	Sublime Security	8mo ago Aug 5th, 2025	Spam Image as content Content analysis HTML analysis Sender analysis Exif analysis
Spam: Unsolicited WordPress account creation or password reset request	Sublime Security	5mo ago Nov 24th, 2025	Spam Social engineering Header analysis Sender analysis URL analysis
Spam: Website errors solicitation	Sublime Security	11d ago Apr 14th, 2026	Spam Content analysis Sender analysis Natural Language Understanding
Suspicious invoice reference with missing or image-only attachments	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Social engineering Content analysis Computer Vision File analysis Natural Language Understanding 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
Unicode QR code	Sublime Security	8mo ago Aug 25th, 2025	Credential Phishing Evasion Content analysis Sender analysis QR code analysis
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 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
Zoom Events newsletter abuse	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Free file host Free subdomain host Social engineering Impersonation: Brand Header analysis HTML analysis Natural Language Understanding URL analysis

131 Rules

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