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
Brand impersonation: McAfee	Sublime Security	15d ago Apr 9th, 2026	Credential Phishing BEC/Fraud Callback Phishing Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Brand impersonation: MetaMask	Sublime Security	7mo ago Sep 22nd, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Computer Vision Natural Language Understanding Sender analysis Header analysis
Brand impersonation: Microsoft logo or suspicious language with open redirect	Sublime Security	2y ago Mar 7th, 2024	BEC/Fraud Impersonation: Brand Open redirect Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Brand impersonation: Microsoft Planner with suspicious link	Sublime Security	2mo ago Feb 6th, 2026	Credential Phishing Evasion Image as content Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Brand impersonation: Microsoft quarantine release notification in image attachment	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Free file host Impersonation: Brand Social engineering Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Brand impersonation: Microsoft with embedded logo and credential theft language	Sublime Security	6mo ago Oct 17th, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Natural Language Understanding Sender analysis
Brand impersonation: Microsoft with low reputation links	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Free file host Image as content Impersonation: Brand Social engineering Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis
Brand impersonation: Navan	Sublime Security	2mo ago Feb 9th, 2026	Credential Phishing Impersonation: Brand Social engineering Spoofing Sender analysis Natural Language Understanding URL analysis Content analysis
Brand impersonation: SendGrid	Sublime Security	1mo ago Mar 12th, 2026	BEC/Fraud Credential Phishing Spam Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Brand impersonation: Sharepoint	Sublime Security	3mo ago Jan 10th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis File analysis Natural Language Understanding Sender analysis
Brand impersonation: SharePoint PDF attachment with credential theft language	Sublime Security	5mo ago Nov 7th, 2025	Credential Phishing Impersonation: Brand Social engineering PDF Evasion Computer Vision File analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis Header analysis Whois
Brand Impersonation: Shein	Sublime Security	6mo ago Oct 15th, 2025	Credential Phishing Spam Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Brand impersonation: Square	Sublime Security	6mo ago Oct 16th, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Brand impersonation: Survey request with credential theft indicators	Sublime Security	2mo ago Feb 20th, 2026	Credential Phishing Social engineering Impersonation: Brand Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis
Brand impersonation: TikTok	Sublime Security	2mo ago Feb 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Brand impersonation: Toronto-Dominion Bank	Sublime Security	21d ago Apr 3rd, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Brand impersonation: Trust Wallet	Sublime Security	8mo ago Aug 5th, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Natural Language Understanding Sender analysis Header analysis
Brand impersonation: UK government Home Office	Sublime Security	3mo ago Jan 12th, 2026	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Lookalike domain Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Brand impersonation: USPS	Sublime Security	11d ago Apr 13th, 2026	Credential Phishing Image as content Impersonation: Brand Social engineering Computer Vision Content analysis Natural Language Understanding Sender analysis
Brand impersonation: Vanguard	Sublime Security	7mo ago Sep 22nd, 2025	BEC/Fraud Callback Phishing Credential Phishing Extortion Malware/Ransomware Spam Impersonation: Brand Natural Language Understanding Header analysis Sender analysis
Brand impersonation: Wise	Sublime Security	4mo ago Dec 12th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis
Brand impersonation: Zoom	Sublime Security	7mo ago Sep 22nd, 2025	Credential Phishing Impersonation: Brand Social engineering Evasion Computer Vision Content analysis HTML analysis Natural Language Understanding URL analysis
Business Email Compromise (BEC) attempt from untrusted sender	Sublime Security	3mo ago Jan 12th, 2026	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Business Email Compromise (BEC) with request for mobile number	Sublime Security	29d ago Mar 26th, 2026	BEC/Fraud Social engineering Content analysis Natural Language Understanding Sender analysis
Business Email Compromise: Request for mobile number via reply thread hijacking	Sublime Security	3h ago Apr 24th, 2026	BEC/Fraud Social engineering Content analysis Natural Language Understanding Sender analysis
Callback phishing: Branded invoice from sender/reply-to domain less than 30 days old	Sublime Security	6mo ago Oct 17th, 2025	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Header analysis Natural Language Understanding Optical Character Recognition Whois
Callback phishing in body or attachment (untrusted sender)	Sublime Security	28d ago Mar 27th, 2026	Callback Phishing Out of band pivot Social engineering Content analysis File analysis Optical Character Recognition Natural Language Understanding Sender analysis
Callback phishing via Apple ID display name abuse	Sublime Security	16d ago Apr 8th, 2026	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis
Callback phishing via calendar invite	Sublime Security	3mo ago Jan 22nd, 2026	Callback Phishing Social engineering Evasion File analysis Header analysis Natural Language Understanding Sender analysis
Callback phishing via extensionless rfc822 attachment	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Impersonation: Brand Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis
Callback phishing via Google Group abuse	Sublime Security	9mo ago Jul 16th, 2025	Callback Phishing Free email provider Impersonation: Brand Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis
Callback phishing via Microsoft comment	Sublime Security	11d ago Apr 13th, 2026	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Callback phishing via Yammer comment	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Content analysis Natural Language Understanding Header analysis
Canva design with suspicious embedded link	Sublime Security	6mo ago Sep 29th, 2025	Credential Phishing Evasion Social engineering Free file host HTML analysis URL analysis Natural Language Understanding Sender analysis
Canva infrastructure abuse	Sublime Security	2mo ago Feb 6th, 2026	BEC/Fraud Callback Phishing Social engineering Impersonation: Brand Impersonation: Employee Free email provider Natural Language Understanding Sender analysis Content analysis
Cloud storage impersonation with credential theft indicators	Sublime Security	1d ago Apr 23rd, 2026	Credential Phishing Free file host Image as content Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis
Commonly abused sender TLD with engaging language	Sublime Security	8mo ago Aug 7th, 2025	Credential Phishing Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis
COVID-19 themed fraud with sender and reply-to mismatch or compensation award	Sublime Security	3mo ago Jan 12th, 2026	BEC/Fraud Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Credential phishing: DocuSign embedded image lure with no DocuSign domains in links	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Credential phishing: Email delivery failure impersonation	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis
Credential phishing: Engaging language and other indicators (untrusted sender)	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Credential phishing: Engaging language with IPFS link	Sublime Security	2y ago May 3rd, 2024	Credential Phishing Free file host Free subdomain host IPFS Content analysis Natural Language Understanding URL analysis
Credential phishing: Fake card notification with tracking lure	Sublime Security	1mo ago Mar 24th, 2026	Credential Phishing Social engineering Content analysis Natural Language Understanding URL analysis Sender analysis
Credential phishing: Fake password expiration from new and unsolicited sender	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Social engineering Content analysis Natural Language Understanding Sender analysis
Credential phishing: Financial lure via ActiveCampaign infrastructure	Sublime Security	28d ago Mar 27th, 2026	Credential Phishing Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Credential phishing: Generic document share template	Sublime Security	24d ago Mar 31st, 2026	BEC/Fraud Credential Phishing Social engineering Evasion Content analysis Natural Language Understanding
Credential phishing: Generic document sharing	Sublime Security	2mo ago Feb 14th, 2026	Credential Phishing BEC/Fraud Social engineering Evasion Impersonation: Employee Content analysis Natural Language Understanding URL analysis Sender analysis
Credential phishing: Image as content, short or no body contents	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion Image as content Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition
Credential phishing language and suspicious indicators (unknown sender)	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Credential phishing: Onedrive impersonation	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Free subdomain host Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding URL analysis

225 Rules

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