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: 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 Teams invitation	Sublime Security	2mo ago Feb 6th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis HTML analysis URL 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: Netflix	min0k	2mo ago Feb 3rd, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Norton	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Free email provider Impersonation: Brand Social engineering Content analysis File analysis Header analysis Sender analysis
Brand impersonation: Okta	Sublime Security	7mo ago Sep 23rd, 2025	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand impersonation: OpenAI with payment issues	Sublime Security	2d ago Apr 22nd, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis
Brand impersonation: Outlook	Sublime Security	2y ago May 29th, 2024	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Paperless Post	Sublime Security	5mo ago Nov 6th, 2025	Credential Phishing Malware/Ransomware Impersonation: Brand Content analysis Header analysis HTML analysis Sender analysis URL analysis
Brand Impersonation: PayPal	Sublime Security	25d ago Mar 30th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Computer Vision Content analysis File analysis Header analysis Sender analysis
Brand impersonation: PNC	Sublime Security	6mo ago Oct 9th, 2025	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand impersonation: Proofpoint secure messaging without legitimate indicators	Sublime Security	5mo ago Nov 17th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Header analysis URL analysis
Brand impersonation: Quickbooks	Sublime Security	3mo ago Jan 15th, 2026	Callback Phishing Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand impersonation: QuickBooks notification from Intuit themed company name	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Credential Phishing BEC/Fraud Evasion Social engineering Content analysis Sender analysis Header analysis
Brand impersonation: Robert Half	Sublime Security	6mo ago Oct 1st, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand impersonation: Robinhood	Sublime Security	29d ago Mar 26th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis URL 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: ShareFile	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Evasion Lookalike domain Header analysis Content analysis Sender analysis
Brand impersonation: Sharepoint fake file share	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Impersonation: Brand Social engineering Content analysis Header analysis URL analysis Computer Vision
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: SiriusXM	Sublime Security	8mo ago Aug 5th, 2025	Callback Phishing Credential Phishing Spam Free email provider Impersonation: Brand Social engineering Content analysis Header analysis 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: Squarespace	Sublime Security	7mo ago Sep 11th, 2025	Credential Phishing Impersonation: Brand Social engineering Header analysis Sender analysis
Brand impersonation: State Farm	Sublime Security	4mo ago Dec 17th, 2025	Credential Phishing Impersonation: Brand Social engineering Spoofing Header analysis Sender analysis
Brand Impersonation: Stripe	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Stripe notification	Sublime Security	7mo ago Sep 26th, 2025	Credential Phishing Evasion Impersonation: Brand Social engineering Content analysis Header analysis URL analysis Whois
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: United Healthcare	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Header analysis 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: WeTransfer	Sublime Security	8mo ago Aug 5th, 2025	BEC/Fraud Callback Phishing Credential Phishing Extortion Malware/Ransomware Spam Impersonation: Brand Content analysis Header analysis Sender analysis
Brand impersonation: Wix	Sublime Security	1mo ago Mar 16th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Xodo Sign	Sublime Security	3mo ago Jan 16th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis
Brand spoof: Dropbox	Sublime Security	2y ago Apr 23rd, 2024	Credential Phishing Malware/Ransomware Impersonation: Brand Spoofing Header analysis Sender analysis
Business Email Compromise (BEC) attempt from unsolicited sender	Sublime Security	9mo ago Jul 16th, 2025	BEC/Fraud Social engineering Spoofing Content analysis File analysis Header analysis Sender 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) attempt from untrusted sender (French/Français)	Sublime Security	9mo ago Jul 16th, 2025	BEC/Fraud Social engineering Content analysis Header analysis Sender analysis
Business Email Compromise (BEC) attempt with masked recipients and reply-to mismatch (unsolicited)	Sublime Security	9mo ago Jul 16th, 2025	BEC/Fraud Evasion Free email provider Header analysis Sender analysis
Callback phishing: AOL senders with suspicious HTML template or PDF attachment	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Free email provider Social engineering Content analysis Header analysis File analysis HTML analysis Exif analysis 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: SumUp infrastructure abuse	Sublime Security	7mo ago Sep 5th, 2025	BEC/Fraud Callback Phishing Evasion Social engineering Content analysis Header analysis Sender analysis
Callback phishing via Adobe Sign comment	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Evasion Impersonation: Brand Out of band pivot Social engineering Content analysis Computer Vision Header analysis Sender analysis URL 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 DocuSign comment	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Evasion Impersonation: Brand Out of band pivot Social engineering Content analysis Computer Vision Header analysis Sender analysis URL analysis
Callback phishing via e-signature service	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Free email provider Impersonation: Brand Social engineering Content analysis Computer Vision Header analysis Optical Character Recognition
Callback phishing via Intuit service abuse	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Evasion Free email provider Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Optical Character Recognition

371 Rules

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