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

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Link: Self-sent PDF lure with subject correlation	Sublime Security	1mo ago Jun 4th, 2026	BEC/Fraud Credential Phishing Social engineering Evasion Header analysis HTML analysis Sender analysis Content analysis
Link: Suspicious Loom HTML file path	Sublime Security	2mo ago May 6th, 2026	Credential Phishing Impersonation: Brand Social engineering HTML analysis URL analysis
Link: Suspicious Sharepoint folder share	Sublime Security	11mo ago Aug 5th, 2025	Credential Phishing Free file host Evasion HTML analysis Header analysis Sender analysis URL analysis
Link: Suspicious single-domain link with suspicious path and financial lure indicators	Sublime Security	30d ago Jun 26th, 2026	Spam Social engineering Content analysis HTML analysis URL analysis
Link: Tycoon2FA phishing kit (non-exhaustive)	Sublime Security	6mo ago Jan 23rd, 2026	Credential Phishing Free subdomain host Evasion Credential Phishing URL analysis HTML analysis Content analysis
Link: Uncommon SharePoint document type with sender's display name	Sublime Security	11mo ago Aug 5th, 2025	Credential Phishing Social engineering OneNote PDF Content analysis Header analysis HTML analysis URL analysis
Link: URL scheme obfuscation via split HTML anchors	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing BEC/Fraud Evasion HTML injection Social engineering Content analysis HTML analysis URL analysis
Low reputation link to auto-downloaded HTML file with smuggling indicators	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Evasion Free file host Free subdomain host HTML smuggling Impersonation: Brand Open redirect Social engineering Content analysis File analysis HTML analysis Javascript analysis Sender analysis URL analysis
Open redirect: Shibboleth SSO Logout Return Parameter	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Open redirect Evasion HTML analysis URL analysis Sender analysis
Outlook hyperlink bypass: left-to-right mark (LRM) in base HTML tag	Sublime Security	7mo ago Dec 10th, 2025	Credential Phishing Evasion Exploit Content analysis HTML analysis URL analysis
Potential prompt injection attack in body HTML	Sublime Security	6mo ago Jan 12th, 2026	Callback Phishing Credential Phishing Extortion Malware/Ransomware Spam BEC/Fraud Evasion Social engineering Header analysis HTML analysis Content analysis
Request for Quote or Purchase (RFQ\|RFP) with HTML smuggling attachment	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Evasion Content analysis File analysis HTML analysis Javascript analysis Natural Language Understanding URL analysis
Self-impersonation: Sender matches recipient with bolded name and suspicious link	Sublime Security	1mo ago Jun 16th, 2026	Credential Phishing Evasion Social engineering Header analysis HTML analysis Sender analysis
Service abuse: Adobe Creative Cloud share from an unsolicited sender address	Sublime Security	9mo ago Oct 22nd, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service abuse: Amazon invitation with suspected callback phishing	Sublime Security	2mo ago May 22nd, 2026	Callback Phishing Out of band pivot Social engineering Content analysis HTML analysis Sender analysis
Service abuse: Apple TestFlight with suspicious developer reference	Sublime Security	5mo ago Feb 6th, 2026	Spam Social engineering Content analysis HTML analysis Natural Language Understanding Sender analysis URL analysis
Service abuse: Google Firebase sender address with suspicious content	Sublime Security	1mo ago Jun 18th, 2026	Spam Credential Phishing Free subdomain host Social engineering Content analysis Header analysis HTML analysis Natural Language Understanding Sender analysis URL analysis Whois
Service abuse: HelloSign from an unsolicited sender address	Sublime Security	11mo ago Aug 5th, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service abuse: HungerRush domain with SendGrid tracking targeting ProtonMail	Sublime Security	4mo ago Mar 4th, 2026	BEC/Fraud Evasion Sender analysis HTML analysis Content analysis
Service abuse: Meetup.com redirect with brand impersonation	Sublime Security	3mo ago Apr 15th, 2026	Credential Phishing Open redirect Impersonation: Brand Evasion URL analysis HTML analysis Content analysis Sender analysis
Service abuse: Oracle Cloud Workflow callback scam	Sublime Security	16d ago Jul 10th, 2026	Callback Phishing Social engineering Impersonation: Brand Sender analysis HTML analysis Natural Language Understanding
Service abuse: Substack credential theft with confusable characters and branded button redirects	Sublime Security	4mo ago Mar 19th, 2026	Credential Phishing Social engineering Evasion Sender analysis HTML analysis Natural Language Understanding URL analysis
Service abuse: SurveyMonkey with suspicious outbound links	Sublime Security	18d ago Jul 8th, 2026	Credential Phishing Social engineering Impersonation: Brand Content analysis HTML analysis Sender analysis URL analysis
Service abuse: Suspicious Zoom Docs link	Sublime Security	7mo ago Dec 2nd, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service abuse: Trello board invitation with VIP impersonation	Sublime Security	5mo ago Feb 3rd, 2026	Credential Phishing Impersonation: VIP Social engineering Content analysis Header analysis HTML analysis Sender analysis
Sharepoint link likely unrelated to sender	Sublime Security	6mo ago Jan 12th, 2026	BEC/Fraud Credential Phishing Impersonation: Employee Lookalike domain OneNote PDF Social engineering URL analysis Sender analysis Header analysis HTML analysis
Spam: Commonly observed formatting of unauthorized free giveaways	Sublime Security	6mo ago Jan 14th, 2026	Spam Impersonation: Brand Social engineering Content analysis HTML analysis Sender analysis URL analysis
Spam: Item giveaway spam template	Sublime Security	11mo ago Aug 5th, 2025	Spam Image as content Content analysis HTML analysis Sender analysis Exif analysis
URI protocol handler: search-ms	Sublime Security	6mo ago Jan 12th, 2026	Malware/Ransomware Evasion File analysis HTML analysis
Venmo payment request abuse	Sublime Security	2mo ago May 4th, 2026	Callback Phishing BEC/Fraud Social engineering Impersonation: Brand Evasion Natural Language Understanding Content analysis Sender analysis HTML analysis
VIP impersonation: VIP recipient of previous thread with HTML generator	Sublime Security	19d ago Jul 7th, 2026	BEC/Fraud Impersonation: VIP Social engineering Evasion HTML analysis Content analysis Sender analysis
Zoom Events newsletter abuse	Sublime Security	18d ago Jul 8th, 2026	Credential Phishing Free file host Free subdomain host Social engineering Impersonation: Brand Header analysis HTML analysis Natural Language Understanding URL analysis

132 Rules

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