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 Oct 21st, 2026

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Rule Name & Severity	Author	Last Updated	Labels
Brand impersonation: Greenvelope	Sublime Security	10mo ago Dec 1st, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis Sender analysis
Brand impersonation: Greetings Island	Sublime Security	2mo ago Aug 18th, 2026	Credential Phishing Malware/Ransomware Impersonation: Brand Social engineering Image as content Spoofing Content analysis Computer Vision Optical Character Recognition Header analysis HTML analysis Sender analysis
Brand impersonation: Mailgun	Sublime Security	28d ago Sep 23rd, 2026	Credential Phishing BEC/Fraud Impersonation: Brand Sender analysis
Brand impersonation: Meta and subsidiaries	Sublime Security	12d ago Oct 9th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Header analysis Sender analysis
Brand impersonation: Microsoft logo image linking to free file host	Sublime Security	2mo ago Aug 21st, 2026	Credential Phishing Malware/Ransomware Impersonation: Brand Image as content Free file host Social engineering Computer Vision Optical Character Recognition Exif analysis HTML analysis URL analysis
Brand impersonation: Microsoft logo in HTML with fake quarantine release notification	Sublime Security	23d ago Sep 28th, 2026	Credential Phishing Evasion Impersonation: Brand Social engineering Content analysis HTML analysis Sender analysis
Brand impersonation: Microsoft (QR code)	Sublime Security	2mo ago Jul 27th, 2026	Credential Phishing Impersonation: Brand PDF QR code Social engineering Computer Vision Header analysis QR code analysis Sender analysis
Brand impersonation: Microsoft Teams invitation	Sublime Security	12d ago Oct 9th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis HTML analysis URL analysis
Brand impersonation: Microsoft with low reputation links	Sublime Security	28d ago Sep 23rd, 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: MyChart	Sublime Security	7d ago Oct 14th, 2026	Credential Phishing Spam Impersonation: Brand Social engineering Spoofing Content analysis Natural Language Understanding Header analysis Sender analysis
Brand impersonation: Paperless Post	Sublime Security	1mo ago Aug 31st, 2026	Credential Phishing Malware/Ransomware Impersonation: Brand Content analysis Header analysis HTML analysis Sender analysis URL analysis
Brand impersonation: Proofpoint secure messaging without legitimate indicators	Sublime Security	3mo ago Jun 26th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Header analysis URL analysis
Brand impersonation: Punchbowl	Sublime Security	2mo ago Aug 6th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Sender analysis
Brand impersonation: QuickBooks notification from Intuit themed company name	Sublime Security	9mo ago Jan 12th, 2026	Callback Phishing Credential Phishing BEC/Fraud Evasion Social engineering Content analysis Sender analysis Header analysis
Brand impersonation: Robinhood	Sublime Security	1mo ago Aug 27th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis URL analysis
Brand impersonation: Sharepoint	Sublime Security	28d ago Sep 23rd, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis File analysis Natural Language Understanding Sender analysis
Brand impersonation: Sharepoint fake file share	Sublime Security	28d ago Sep 23rd, 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	28d ago Sep 23rd, 2026	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: Social Security Administration	Sublime Security	1mo ago Sep 16th, 2026	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis
Brand impersonation: UK government Home Office	Sublime Security	28d ago Sep 23rd, 2026	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Lookalike domain Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Brand impersonation: UPS	Sublime Security	28d ago Sep 23rd, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Computer Vision Sender analysis
Brand impersonation: USPS	Sublime Security	28d ago Sep 23rd, 2026	Credential Phishing Image as content Impersonation: Brand Social engineering Computer Vision Content analysis Natural Language Understanding Sender analysis
Brand impersonation: Wells Fargo	Sublime Security	6mo ago Apr 15th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Content analysis Sender analysis
Brand impersonation: Zoom	Sublime Security	4mo ago Jun 5th, 2026	Credential Phishing Impersonation: Brand Social engineering Evasion Computer Vision Content analysis HTML analysis Natural Language Understanding URL analysis
Brand impersonation: Zoom via HTML styling	Sublime Security	7mo ago Feb 27th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis HTML analysis
Callback phishing: AOL senders with suspicious HTML template or PDF attachment	Sublime Security	5mo ago May 4th, 2026	Callback Phishing Free email provider Social engineering Content analysis Header analysis File analysis HTML analysis Exif analysis Sender analysis
Callback phishing in body or attachment (untrusted sender)	Sublime Security	2mo ago Aug 5th, 2026	Callback Phishing Out of band pivot Social engineering Content analysis File analysis Optical Character Recognition Natural Language Understanding Sender analysis
Callback phishing: SumUp infrastructure abuse	Sublime Security	23d ago Sep 28th, 2026	BEC/Fraud Callback Phishing Evasion Social engineering Content analysis Header analysis Sender analysis
Callback phishing via Apple ID display name abuse	Sublime Security	4mo ago Jun 11th, 2026	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis
Callback phishing via Intuit service abuse	Sublime Security	5mo ago May 4th, 2026	Callback Phishing Evasion Free email provider Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Optical Character Recognition
Callback phishing via Zelle Service Abuse	Sublime Security	5mo ago May 4th, 2026	BEC/Fraud Callback Phishing Evasion Social engineering Content analysis Header analysis Sender analysis
Callback phishing: Zero-width character obfuscation from freemail sender	Sublime Security	2mo ago Aug 5th, 2026	Callback Phishing Free email provider Evasion Social engineering HTML analysis Content analysis Sender analysis
Canva infrastructure abuse	Sublime Security	5mo ago May 4th, 2026	BEC/Fraud Callback Phishing Social engineering Impersonation: Brand Impersonation: Employee Free email provider Natural Language Understanding Sender analysis Content analysis
Compensation review with QR code in attached EML	Sublime Security	10mo ago Nov 26th, 2025	Credential Phishing QR code Social engineering Computer Vision Content analysis Optical Character Recognition QR code analysis
Credential phishing: Blue button styled link with file-sharing template artifacts	Sublime Security	3mo ago Jul 8th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis HTML 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 password expiration from new and unsolicited sender	Sublime Security	23d ago Sep 28th, 2026	Credential Phishing Social engineering Content analysis Natural Language Understanding Sender analysis
Credential phishing: Financial lure via ActiveCampaign infrastructure	Sublime Security	2mo ago Aug 4th, 2026	Credential Phishing Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Credential phishing link (unknown sender)	Sublime Security	28d ago Sep 23rd, 2026	Credential Phishing Social engineering Computer Vision Sender analysis URL analysis URL screenshot
Credential phishing: Personalized document signing request	Sublime Security	2mo ago Jul 27th, 2026	Credential Phishing BEC/Fraud Impersonation: Brand Social engineering Content analysis HTML analysis
Credential phishing: Suspicious e-sign agreement document notification	Sublime Security	8d ago Oct 13th, 2026	Credential Phishing Social engineering Content analysis Header analysis HTML analysis URL analysis Sender analysis
Credential Phishing: W-2 lure with inline SVG Windows logo	Sublime Security	6mo 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	11mo ago Nov 5th, 2025	Spam Evasion Image as content Content analysis HTML analysis
Credential theft: JavaScript date manipulation in HTML body	Sublime Security	2mo ago Jul 28th, 2026	Credential Phishing Evasion Scripting Social engineering HTML analysis Javascript analysis Natural Language Understanding
CVE-2023-5631 - Roundcube Webmail XSS via crafted SVG	Sublime Security	5mo ago Apr 27th, 2026	Malware/Ransomware Evasion Exploit HTML smuggling Scripting Content analysis HTML analysis Sender analysis
Deceptive Dropbox mention	Sublime Security	9mo 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
EML attachment with credential theft language (unknown sender)	Sublime Security	7mo ago Mar 17th, 2026	Credential Phishing Evasion Social engineering Natural Language Understanding Sender analysis Content analysis Header analysis
Evasion: Hidden content divs from freemail sender	Sublime Security	4mo ago Jun 17th, 2026	Credential Phishing Evasion Free email provider HTML analysis Content analysis Sender analysis
Evasion: Hidden text using CSS-obscured HTML option labels	Sublime Security	1mo ago Sep 1st, 2026	Credential Phishing Evasion Social engineering Impersonation: Brand HTML analysis URL analysis Content analysis
Evasion: Suspicious use of Unicode tag characters	Sublime Security	17d ago Oct 4th, 2026	BEC/Fraud Credential Phishing Evasion Social engineering Content analysis HTML analysis Header analysis

198 Rules

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