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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 17th, 2025

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Rule Name & Severity	Author	Last Updated	Labels
Link: QuickBooks image lure with suspicious link	Sublime Security	1y ago May 2nd, 2024	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Optical Character Recognition URL analysis	/feeds/core/detection-rules/link-quickbooks-image-lure-with-suspicious-link-3826a923
Link to auto-downloaded file with Adobe branding	Sublime Security	4d ago Jul 16th, 2025	Malware/Ransomware Impersonation: Brand Social engineering File analysis Optical Character Recognition Sender analysis URL analysis URL screenshot	/feeds/core/detection-rules/link-to-auto-downloaded-file-with-adobe-branding-e826c2cf
Link to auto-downloaded file with Google Drive branding	Sublime Security	4d ago Jul 16th, 2025	Malware/Ransomware Impersonation: Brand Social engineering Content analysis File analysis Optical Character Recognition URL analysis URL screenshot	/feeds/core/detection-rules/link-to-auto-downloaded-file-with-google-drive-branding-4b5343be
Open Redirect: Google domain with /url path and suspicious indicators	Sublime Security	6mo ago Jan 10th, 2025	Credential Phishing Evasion Open redirect Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis	/feeds/core/detection-rules/open-redirect-google-domain-with-url-path-and-suspicious-indicators-fc5adf74
Suspicious Attachment: Duplicate decoy PDF files	Sublime Security	4mo ago Mar 18th, 2025	Credential Phishing Evasion PDF File analysis Optical Character Recognition	/feeds/core/detection-rules/suspicious-attachment-duplicate-decoy-pdf-files-79b9b2e7
Suspicious recipient pattern and language with low reputation link to login	Sublime Security	1y ago Apr 30th, 2024	Credential Phishing Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis URL screenshot	/feeds/core/detection-rules/suspicious-recipient-pattern-and-language-with-low-reputation-link-to-login-a8ea0402
X (Twitter) Impersonation with Credential Phishing motives	Sublime Security	4d ago Jul 16th, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Header analysis Optical Character Recognition Natural Language Understanding Sender analysis	/feeds/core/detection-rules/x-twitter-impersonation-with-credential-phishing-motives-0b60dca6