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
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 Google Meet	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Out of band pivot Content analysis
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
Callback phishing via Microsoft comment	Sublime Security	12d 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 Signable E-Signature Request	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Exploit Impersonation: Brand Out of band pivot Social engineering Computer Vision Content analysis Header analysis Sender analysis URL analysis
Callback phishing via SignFree e-signature request	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Exploit Impersonation: Brand Out of band pivot Social engineering Computer Vision Content analysis Header analysis Sender analysis URL analysis
Callback phishing via Xodo Sign comment	Sublime Security	3mo ago Jan 12th, 2026	Callback Phishing Exploit Impersonation: Brand Out of band pivot Social engineering Computer Vision Content analysis Header analysis Sender analysis URL 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
Callback phishing via Zelle Service Abuse	Sublime Security	3mo ago Jan 12th, 2026	BEC/Fraud Callback Phishing Evasion Social engineering Content analysis Header analysis Sender analysis
Callback phishing via Zoho 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
Callback Phishing via Zoom comment	Sublime Security	2mo ago Feb 11th, 2026	Callback Phishing Out of band pivot Social engineering Impersonation: Brand Computer Vision Content analysis Header analysis Sender analysis
Callback scam: Impersonation via TimeTrade infrastructure	Sublime Security	8mo ago Aug 20th, 2025	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Content analysis Sender analysis Header 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
ClickFunnels link infrastructure abuse	Sublime Security	2mo ago Feb 5th, 2026	Credential Phishing Free email provider Free subdomain host Social engineering Content analysis Header analysis QR code analysis Sender analysis URL analysis
Cloud storage impersonation with credential theft indicators	Sublime Security	2d 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
Compensation review with QR code in attached EML	Sublime Security	4mo ago Nov 26th, 2025	Credential Phishing QR code Social engineering Computer Vision Content analysis Optical Character Recognition QR code analysis
Constant Contact link infrastructure abuse	Sublime Security	6mo ago Oct 17th, 2025	Credential Phishing Free email provider Open redirect Social engineering Content analysis Header analysis QR code analysis Sender 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: Blue button styled link with file-sharing template artifacts	Sublime Security	1mo ago Mar 9th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis HTML analysis URL 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: Fake storage alerts (unsolicited)	Sublime Security	23d ago Apr 2nd, 2026	Credential Phishing Social engineering Content analysis Sender analysis
Credential phishing: Financial lure via ActiveCampaign infrastructure	Sublime Security	29d 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	25d 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: Hyper-linked image leading to free file host	Sublime Security	8mo ago Aug 5th, 2025	Credential Phishing Evasion Free file host Image as content Social engineering Content analysis Header analysis Sender analysis URL 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
Credential phishing: Re-Authentication lure	Sublime Security	6mo ago Oct 17th, 2025	Credential Phishing Social engineering Impersonation: Brand Natural Language Understanding Content analysis URL analysis Header analysis Sender analysis
Credential phishing: Suspicious e-sign agreement document notification	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Social engineering Content analysis Header analysis HTML analysis URL analysis Sender analysis
Credential Phishing: Suspicious language, link, recipients and other indicators	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Evasion Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Credential phishing: Suspicious subject with urgent financial request and link	Sublime Security	5d ago Apr 20th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Credential phishing: Tax form impersonation with payment request	Sublime Security	2mo ago Feb 13th, 2026	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering PDF Content analysis Header analysis Sender analysis URL analysis
Credential Phishing via Dropbox comment abuse	Sublime Security	7mo ago Sep 22nd, 2025	Credential Phishing Evasion Out of band pivot Social engineering Content analysis Computer Vision Sender analysis
Credential Phishing: W-2 lure with inline SVG Windows logo	Sublime Security	17d ago Apr 8th, 2026	Credential Phishing Evasion HTML smuggling Social engineering Content analysis HTML analysis
Credential theft: Gophish abuse with hidden tracking image	Sublime Security	5mo ago Nov 5th, 2025	Spam Evasion Image as content Content analysis HTML analysis
Credential theft with 'safe content' deception and social engineering topics	Sublime Security	1mo ago Feb 25th, 2026	Credential Phishing Social engineering Evasion Content analysis Natural Language Understanding
CVE-2023-5631 - Roundcube Webmail XSS via crafted SVG	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion Exploit HTML smuggling Scripting Content analysis HTML analysis Sender analysis
Cyrillic vowel substitution in subject or display name from unknown sender	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Evasion Social engineering Spoofing Content analysis Header analysis Sender analysis
Cyrillic vowel substitutions with suspicious subject from unknown sender	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion Impersonation: Brand Social engineering Content analysis Sender analysis
Deceptive Dropbox mention	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Free file host Free subdomain host Social engineering Header analysis Content analysis Natural Language Understanding Sender analysis URL analysis
Display Name Emoji with Financial Symbols	Sublime Security	3mo ago Jan 12th, 2026	BEC/Fraud Callback Phishing Social engineering Evasion Content analysis Header analysis Sender analysis
DocuSign impersonation via CloudHQ links	Sublime Security	8mo ago Aug 5th, 2025	Credential Phishing BEC/Fraud Impersonation: Brand Free file host Header analysis URL analysis Content analysis Sender analysis
Domain impersonation: Freemail reply-to local lookalike with financial request	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
EML attachment with credential theft language (unknown sender)	Sublime Security	1mo ago Mar 17th, 2026	Credential Phishing Evasion Social engineering Natural Language Understanding Sender analysis Content analysis Header analysis

522 Rules

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