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 23rd, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
HTML content with print styling and credential theft language	Sublime Security	4mo ago Jun 16th, 2026	Credential Phishing Evasion HTML smuggling Social engineering Content analysis HTML analysis Natural Language Understanding
HTML smuggling with atob in message body	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware HTML smuggling Content analysis HTML analysis
HTML: Template placeholders or recipient email in element class attributes	Sublime Security	2mo ago Aug 5th, 2026	Credential Phishing BEC/Fraud Evasion Social engineering HTML analysis Content analysis
Image as content with a link to an open redirect	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Malware/Ransomware Evasion Image as content Open redirect Social engineering Content analysis HTML analysis URL analysis
Impersonation: Chrome Web Store policy	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Impersonation: Brand Free email provider Lookalike domain Content analysis Header analysis HTML analysis Sender analysis URL analysis
Impersonation: Fake product discount promotion	Sublime Security	4mo ago Jun 16th, 2026	BEC/Fraud Social engineering Free file host Content analysis HTML analysis URL analysis
Impersonation: SAM/SBA federal registration	Sublime Security	1mo ago Sep 11th, 2026	Credential Phishing BEC/Fraud Impersonation: Brand Social engineering Image as content Sender analysis Content analysis HTML analysis Header analysis
Inline image as message with attachment or link	Sublime Security	1y ago Jul 16th, 2025	Credential Phishing Evasion Image as content Content analysis HTML analysis URL analysis
Link: Abused Adobe Express	Sublime Security	1y ago Jul 23rd, 2025	Credential Phishing Evasion Free subdomain host Free file host Content analysis Sender analysis URL analysis Whois HTML analysis
Link: Apple App Store link to apps impersonating AI adveristing	Sublime Security	7mo ago Mar 5th, 2026	Credential Phishing Impersonation: Brand Content analysis URL analysis HTML analysis
Link: chatbot.page platform abuse	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Social engineering Out of band pivot URL analysis Natural Language Understanding Content analysis HTML analysis Javascript analysis URL screenshot
Link: Common hidden directory observed	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion URL analysis HTML analysis
Link: Credential harvesting with excess padding evasion	Sublime Security	1mo ago Aug 28th, 2026	Credential Phishing Evasion Social engineering Content analysis HTML analysis Exif analysis URL screenshot
Link: Credential phishing with cloaked content	Sublime Security	17d ago Oct 8th, 2026	Credential Phishing Evasion Social engineering URL analysis HTML analysis Natural Language Understanding Content analysis
Link: Credential phishing with visit-tracking script	Sublime Security	30d ago Sep 25th, 2026	Credential Phishing Scripting Evasion Natural Language Understanding URL analysis HTML analysis Javascript analysis
Link: Credential theft with invisible Unicode character in page title from unsolicited sender	Sublime Security	8mo ago Feb 13th, 2026	Credential Phishing Evasion Social engineering Natural Language Understanding Content analysis HTML analysis URL analysis URL screenshot
Link: Fake Cloudflare verification landing page	Sublime Security	1mo ago Sep 11th, 2026	Credential Phishing Social engineering URL analysis HTML analysis Header analysis Content analysis
Link: Fake secure message notification template	Sublime Security	4mo ago Jun 25th, 2026	Credential Phishing Evasion Social engineering HTML analysis Content analysis URL analysis
Link: Fake webmail hosting	Sublime Security	1mo ago Sep 9th, 2026	Credential Phishing Social engineering HTML analysis URL analysis
Link: File sharing pretext with suspicious body and link	Sublime Security	1y ago Oct 10th, 2025	Credential Phishing Social engineering Evasion Natural Language Understanding Content analysis URL analysis HTML analysis
Link: Gmail phishkit with suspicious recipient	Sublime Security	1mo ago Sep 2nd, 2026	Credential Phishing Impersonation: Brand Evasion Social engineering URL analysis HTML analysis Sender analysis
Link: Mismatched Shopify template button href	Sublime Security	2mo ago Aug 20th, 2026	Credential Phishing Evasion Social engineering HTML analysis URL analysis Header analysis Sender analysis
Link: Multistage landing - Abused Adobe frame.io	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Evasion Free file host Content analysis Whois Computer Vision URL analysis HTML analysis
Link: Multistage landing - Abused Docusign	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Evasion Free subdomain host Free file host Content analysis Sender analysis URL analysis Whois HTML analysis
Link: Multistage landing - Abused Google Drive	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Evasion Free email provider Free file host Content analysis Sender analysis URL analysis Whois HTML analysis
Link: Multistage landing - JotForm abuse	Sublime Security	10mo ago Dec 1st, 2025	Credential Phishing Evasion Social engineering Content analysis HTML analysis Javascript analysis URL analysis
Link: Multistage landing - Microsoft Forms abuse	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering HTML analysis URL analysis Content analysis
Link: Multistage landing - Scribd document	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion Social engineering Impersonation: Brand Free file host URL analysis HTML analysis Natural Language Understanding Computer Vision Optical Character Recognition URL screenshot
Link: PDF display text with fake copyright claim template	Sublime Security	7mo ago Mar 18th, 2026	Credential Phishing Malware/Ransomware Evasion Image as content PDF Content analysis HTML analysis
Link: RTL text reversal with recipient email in URL	Sublime Security	2mo ago Aug 20th, 2026	Credential Phishing Evasion Social engineering HTML analysis URL analysis
Link: Self-sent PDF lure with subject correlation	Sublime Security	4mo ago Jun 4th, 2026	BEC/Fraud Credential Phishing Social engineering Evasion Header analysis HTML analysis Sender analysis Content analysis
Link: Self-service platform link to Microsoft login redirect	Sublime Security	11d ago Oct 14th, 2026	Credential Phishing Open redirect Social engineering URL analysis HTML analysis Content analysis
Link: Suspicious HTML structure with subject mirrored in body and single link	Sublime Security	2mo ago Jul 27th, 2026	Credential Phishing Social engineering Impersonation: Brand Content analysis HTML analysis
Link: Suspicious Loom HTML file path	Sublime Security	5mo ago May 6th, 2026	Credential Phishing Impersonation: Brand Social engineering HTML analysis URL analysis
Link: Suspicious recipient with timeout redirect	Sublime Security	2mo ago Aug 4th, 2026	Credential Phishing Scripting Evasion Social engineering URL analysis Javascript analysis HTML analysis Sender analysis
Link: Suspicious Sharepoint folder share	Sublime Security	1mo ago Sep 23rd, 2026	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	4mo ago Jun 26th, 2026	Spam Social engineering Content analysis HTML analysis URL analysis
Link: Tycoon2FA phishing kit (non-exhaustive)	Sublime Security	9mo 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	1y ago Aug 5th, 2025	Credential Phishing Social engineering OneNote PDF Content analysis Header analysis HTML analysis URL analysis
Link: URL fragmented by hidden spans	Sublime Security	2mo ago Aug 13th, 2026	Credential Phishing Evasion Social engineering HTML analysis Content analysis URL analysis
Link: URL scheme obfuscation via split HTML anchors	Sublime Security	9mo 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	2mo ago Jul 29th, 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	2mo ago Jul 27th, 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	10mo ago Dec 10th, 2025	Credential Phishing Evasion Exploit Content analysis HTML analysis URL analysis
Potential prompt injection attack in body HTML	Sublime Security	1mo ago Sep 23rd, 2026	Callback Phishing Credential Phishing Extortion Malware/Ransomware Spam BEC/Fraud Evasion Social engineering Header analysis HTML analysis Content analysis
Prompt injection: Hidden instructions to an AI in body HTML	Sublime Security	4d ago Oct 21st, 2026	BEC/Fraud Evasion Social engineering Content analysis HTML analysis Natural Language Understanding Sender analysis
Request for Quote or Purchase (RFQ\|RFP) with HTML smuggling attachment	Sublime Security	9mo 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	4mo 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	1y 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	5mo ago May 22nd, 2026	Callback Phishing Out of band pivot Social engineering Content analysis HTML analysis Sender analysis

175 Rules

Page 3 of 4