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 Jul 25th, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
BEC/Fraud: Unsolicited business acquisition offer	Sublime Security	20d ago Jul 6th, 2026	BEC/Fraud Social engineering Content analysis
BEC/Fraud: Urgent language and suspicious sending/infrastructure patterns	Sublime Security	3mo ago Apr 17th, 2026	BEC/Fraud Callback Phishing Spam Impersonation: Brand Social engineering Free email provider Content analysis Header analysis Sender analysis Whois
BEC with unusual reply-to or return-path mismatch	Sublime Security	1mo ago Jun 5th, 2026	BEC/Fraud Evasion Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Benefits enrollment impersonation	Sublime Security	1mo ago Jun 5th, 2026	Credential Phishing Evasion Impersonation: Employee Out of band pivot Social engineering Content analysis Header analysis Sender analysis
Body: Embedded email headers indicative of thread hijacking/abuse	Sublime Security	7mo ago Dec 1st, 2025	Credential Phishing BEC/Fraud Spam Evasion Social engineering Spoofing Content analysis Header analysis Sender analysis
Body: Fake secure email portal with HTML obfuscation	Sublime Security	1mo ago Jun 18th, 2026	Credential Phishing Evasion Social engineering Spoofing Content analysis HTML analysis URL analysis Sender analysis Threat intelligence
Body HTML: Recipient SLD in HTML class	Sublime Security	10mo ago Sep 23rd, 2025	Credential Phishing Evasion Social engineering HTML analysis Header analysis Sender analysis
Body: HTML whitespace stuffing with short initial message	Sublime Security	1mo ago May 29th, 2026	Credential Phishing Evasion Social engineering Content analysis HTML analysis Header analysis
Body: Invisible Unicode obfuscation student loan callback phishing	Sublime Security	1mo ago Jun 25th, 2026	BEC/Fraud Credential Phishing Spam Evasion Social engineering HTML analysis Content analysis
Body: PayApp transaction reference pattern	Sublime Security	3mo ago Apr 7th, 2026	Callback Phishing BEC/Fraud Impersonation: Brand Social engineering Content analysis
Body: Suspicious date format	Sublime Security	3mo ago Apr 22nd, 2026	Credential Phishing Evasion Spoofing Social engineering Content analysis
Body: Suspicious table template fingerprint	Sublime Security	1mo ago Jun 25th, 2026	Credential Phishing Social engineering Evasion HTML analysis Content analysis
Brand impersonation: AARP	Sublime Security	17d ago Jul 9th, 2026	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis
Brand impersonation: Adobe Sign with suspicious indicators	Sublime Security	1mo ago Jun 10th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis HTML analysis Sender analysis
Brand impersonation: Adobe with suspicious language and link	Sublime Security	20d ago Jul 6th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand impersonation: ADP	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Header analysis Sender analysis
Brand impersonation: AliExpress	Sublime Security	11mo ago Aug 5th, 2025	Callback Phishing Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis URL analysis
Brand impersonation: Amazon	Sublime Security	16d ago Jul 10th, 2026	Credential Phishing Impersonation: Brand Social engineering Header analysis Sender analysis
Brand impersonation: Amazon Web Services (AWS)	Sublime Security	20d ago Jul 6th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Optical Character Recognition Sender analysis Natural Language Understanding
Brand impersonation: Amazon with suspicious attachment	Sublime Security	3mo ago Apr 14th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Brand impersonation: American Express (AMEX)	Sublime Security	5mo ago Feb 17th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Anthropic/Claude with newly registered domain	Sublime Security	2d ago Jul 24th, 2026	BEC/Fraud Spam Lookalike domain Social engineering Spoofing Content analysis Header analysis Sender analysis Whois
Brand impersonation: Apple	Sublime Security	3y ago Aug 21st, 2023	Credential Phishing Impersonation: Brand Social engineering Header analysis Sender analysis
Brand impersonation: Aquent	Sublime Security	9mo ago Oct 9th, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis
Brand impersonation: Aramco	Sublime Security	5mo ago Jan 28th, 2026	BEC/Fraud Impersonation: Brand Lookalike domain Social engineering Content analysis Header analysis HTML analysis Natural Language Understanding Sender analysis
Brand impersonation: AuthentiSign	Sublime Security	6mo ago Jan 21st, 2026	Credential Phishing BEC/Fraud Impersonation: Brand Lookalike domain Social engineering Content analysis Header analysis Sender analysis
Brand impersonation: Automobile assistance associations	Sublime Security	5d ago Jul 21st, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Header analysis Sender analysis
Brand impersonation: Bank of America	Sublime Security	3mo ago Mar 31st, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Barracuda Networks	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Bids & Tenders	Sublime Security	5d ago Jul 21st, 2026	Credential Phishing Impersonation: Brand Spoofing Social engineering Sender analysis URL analysis Content analysis
Brand impersonation: Binance	Sublime Security	10mo ago Sep 3rd, 2025	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Content analysis Header analysis HTML analysis Natural Language Understanding Sender analysis
Brand impersonation: Blockchain.com	Sublime Security	1mo ago Jun 5th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Booking.com	Sublime Security	2mo ago May 6th, 2026	Credential Phishing Impersonation: Brand Social engineering Natural Language Understanding Header analysis Sender analysis
Brand impersonation: Box file sharing service	Sublime Security	1mo ago Jun 5th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand impersonation: Canada Revenue Agency	Sublime Security	1mo ago Jun 8th, 2026	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis
Brand impersonation: Capital One	Sublime Security	1mo ago Jun 5th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Computer Vision Sender analysis Header analysis
Brand impersonation: Charles Schwab	Sublime Security	10mo ago Sep 3rd, 2025	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Chase Bank	Sublime Security	17d ago Jul 9th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Chase bank with credential phishing indicators	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Natural Language Understanding Sender analysis URL analysis
Brand impersonation: Cloud services with credential theft intent	Sublime Security	30d ago Jun 26th, 2026	Credential Phishing Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis
Brand impersonation: Coinbase	Sublime Security	8mo ago Nov 4th, 2025	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Dashlane	Sublime Security	2mo ago May 26th, 2026	Credential Phishing Impersonation: Brand Social engineering Header analysis Sender analysis
Brand impersonation: DHL	Sublime Security	1mo ago Jun 5th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: DigitalOcean	Sublime Security	10mo ago Sep 18th, 2025	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Discord notification	Sublime Security	9mo ago Oct 23rd, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis
Brand Impersonation: Disney	Sublime Security	4mo ago Mar 4th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Natural Language Understanding Content analysis Header analysis Sender analysis
Brand impersonation: DocSend	Sublime Security	4mo ago Mar 18th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: DocuSign	Sublime Security	1mo ago Jun 1st, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Spoofing Header analysis Sender analysis URL analysis
Brand impersonation: DocuSign branded attachment lure with no DocuSign links	Sublime Security	9mo ago Oct 22nd, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL screenshot
Brand impersonation: DocuSign PDF attachment with suspicious link	Sublime Security	9mo ago Oct 22nd, 2025	Credential Phishing Impersonation: Brand PDF Social engineering File analysis Natural Language Understanding Optical Character Recognition URL analysis

678 Rules

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