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 Sep 9th, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Service abuse: HelloSign from an unsolicited sender address	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service abuse: Linode Objects HTML file hosting	Sublime Security	3mo ago Jun 5th, 2026	Credential Phishing Malware/Ransomware Free file host Evasion URL analysis Content analysis
Service abuse: SendThisFile with credential theft and financial language	Sublime Security	10mo ago Oct 27th, 2025	BEC/Fraud Credential Phishing Free file host Social engineering Content analysis Natural Language Understanding Sender analysis
Service abuse: Square marketing with suspicious QR code	Sublime Security	3mo ago May 26th, 2026	Credential Phishing QR code Free file host Computer Vision QR code analysis Sender analysis URL analysis
Service abuse: SurveyMonkey survey from newly registered domain	Sublime Security	8mo ago Jan 12th, 2026	Credential Phishing Evasion Free file host Social engineering Content analysis Header analysis Sender analysis
Service abuse: Suspicious Zoom Docs link	Sublime Security	9mo ago Dec 2nd, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Spam: Campaign with excessive space/char obfuscation and free file hosted link	Sublime Security	8mo ago Jan 12th, 2026	Spam Free file host Content analysis Sender analysis
Spoofable internal domain with suspicious signals	Sublime Security	1y ago Jul 23rd, 2025	Credential Phishing Free file host Free subdomain host Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis
Suspicious DocuSign share from new domain	Sublime Security	1y ago Aug 5th, 2025	BEC/Fraud Credential Phishing Evasion Free file host Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis
Suspicious Links to Cloudflare R2 and Edge Services	Sublime Security	8mo ago Jan 12th, 2026	BEC/Fraud Callback Phishing Credential Phishing Extortion Malware/Ransomware Spam Free file host Header analysis Sender analysis URL analysis
Suspicious SharePoint file sharing	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Free email provider Free file host OneNote PDF Content analysis Header analysis Sender analysis URL analysis
Zoom Events newsletter abuse	Sublime Security	2mo 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

112 Rules

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