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 Apr 24th, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Attachment: Adobe image lure in body or attachment with suspicious link	Sublime Security	3mo ago Jan 5th, 2026	Credential Phishing Image as content Impersonation: Brand Content analysis Computer Vision Optical Character Recognition Sender analysis URL analysis
Attachment: Callback phishing solicitation via image file	@vector_sec	3mo ago Jan 12th, 2026	Callback Phishing Evasion Free email provider Out of band pivot Social engineering Image as content Content analysis Optical Character Recognition Sender analysis URL analysis Computer Vision
Attachment: DocuSign impersonation via PDF linking to new domain	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand PDF Social engineering Header analysis Sender analysis URL analysis File analysis Computer Vision Whois
Attachment: EML with link to credential phishing page	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Evasion Free file host Free subdomain host Social engineering Computer Vision Content analysis File analysis Header analysis HTML analysis Natural Language Understanding Optical Character Recognition URL analysis URL screenshot
Attachment: Fake Slack installer	Sublime Security	3y ago Nov 29th, 2023	Malware/Ransomware Evasion HTML smuggling Impersonation: Brand Scripting Social engineering Archive analysis Computer Vision File analysis HTML analysis Natural Language Understanding URL analysis
Attachment: Fake voicemail via PDF	Sublime Security	10d ago Apr 14th, 2026	Credential Phishing PDF QR code Social engineering Computer Vision Content analysis File analysis Optical Character Recognition QR code analysis URL analysis
Attachment: Fake Zoom installer	Sublime Security	3y ago Nov 29th, 2023	Malware/Ransomware Evasion HTML smuggling Impersonation: Brand Scripting Social engineering Archive analysis Computer Vision File analysis HTML analysis Natural Language Understanding URL analysis
Attachment: HTML smuggling - QR Code with suspicious links	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing QR code Computer Vision Header analysis Natural Language Understanding QR code analysis Sender analysis URL analysis URL screenshot
Attachment: Microsoft impersonation via PDF with link and suspicious language	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Malware/Ransomware Image as content Impersonation: Brand PDF Scripting Social engineering Computer Vision File analysis Header analysis Natural Language Understanding Sender analysis
Attachment: QR code link with base64-encoded recipient address	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing QR code Image as content Social engineering Evasion PDF Macros Computer Vision File analysis Natural Language Understanding QR code analysis Sender analysis
Attachment: QR code with credential phishing indicators	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing QR code Social engineering Computer Vision Header analysis Natural Language Understanding QR code analysis Sender analysis URL analysis URL screenshot
Attachment: QR code with recipient targeting and special characters	Sublime Security	2mo ago Feb 21st, 2026	Credential Phishing QR code Social engineering Evasion File analysis QR code analysis URL analysis Computer Vision
Brand impersonation: Adobe (QR code)	Sublime Security	4d ago Apr 20th, 2026	Credential Phishing Impersonation: Brand PDF QR code Computer Vision Header analysis QR code analysis Sender analysis
Brand impersonation: Adobe with suspicious language and link	Sublime Security	5mo ago Nov 24th, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand impersonation: Amazon with suspicious attachment	Sublime Security	10d ago Apr 14th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Brand impersonation: Box file sharing service	Sublime Security	7mo ago Sep 23rd, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand impersonation: Capital One	Sublime Security	5mo ago Nov 17th, 2025	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Computer Vision Sender analysis Header analysis
Brand impersonation: Chase bank with credential phishing indicators	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Natural Language Understanding Sender analysis URL analysis
Brand impersonation: Coinbase with suspicious links	Sublime Security	7mo ago Sep 22nd, 2025	Credential Phishing Evasion Free subdomain host Image as content Impersonation: Brand Computer Vision Content analysis File analysis URL analysis
Brand impersonation: Discord notification	Sublime Security	6mo ago Oct 23rd, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis
Brand Impersonation: Disney	Sublime Security	1mo ago Mar 4th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Natural Language Understanding Content analysis Header analysis Sender analysis
Brand impersonation: DocuSign branded attachment lure with no DocuSign links	Sublime Security	6mo ago Oct 22nd, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL screenshot
Brand impersonation: DocuSign (QR code)	Sublime Security	6mo ago Oct 15th, 2025	Credential Phishing Impersonation: Brand PDF QR code Social engineering Computer Vision Header analysis QR code analysis Sender analysis
Brand impersonation: DocuSign with embedded QR code	Sublime Security	6mo ago Oct 17th, 2025	Credential Phishing Evasion Image as content Impersonation: Brand QR code Computer Vision Content analysis QR code analysis Sender analysis
Brand impersonation: Fake Fax	Sublime Security	2mo ago Feb 5th, 2026	Credential Phishing Impersonation: Brand Image as content Free file host Free subdomain host Social engineering Computer Vision Content analysis Optical Character Recognition Sender analysis URL analysis
Brand impersonation: File sharing notification with template artifacts	Sublime Security	3mo ago Jan 23rd, 2026	Credential Phishing Impersonation: Brand Social engineering Evasion HTML analysis Computer Vision Content analysis Header analysis
Brand impersonation: Google Drive fake file share	Sublime Security	4mo ago Dec 19th, 2025	Credential Phishing Malware/Ransomware Impersonation: Brand Social engineering Content analysis Header analysis URL analysis Computer Vision
Brand impersonation: Google fake sign-in warning	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Optical Character Recognition Sender analysis URL analysis
Brand Impersonation: Google (QR Code)	Sublime Security	6mo ago Oct 17th, 2025	Credential Phishing Impersonation: Brand PDF QR code Computer Vision Header analysis QR code analysis Sender analysis
Brand impersonation: Gusto	Sublime Security	2mo ago Feb 18th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand impersonation: Hulu	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Spam Free email provider Impersonation: Brand Lookalike domain Social engineering Computer Vision Header analysis Sender analysis
Brand impersonation: KnowBe4	Sublime Security	2y ago Nov 25th, 2024	Credential Phishing Spam Free email provider Impersonation: Brand Lookalike domain Social engineering Computer Vision Header analysis Sender analysis
Brand impersonation: Mailchimp	Sublime Security	25d ago Mar 30th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Natural Language Understanding Content analysis Header analysis Sender analysis
Brand impersonation: MetaMask	Sublime Security	7mo ago Sep 22nd, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Computer Vision Natural Language Understanding Sender analysis Header analysis
Brand impersonation: Microsoft fake sign-in alert	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis File analysis Header analysis Sender analysis Whois
Brand impersonation: Microsoft logo or suspicious language with open redirect	Sublime Security	2y ago Mar 7th, 2024	BEC/Fraud Impersonation: Brand Open redirect Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Brand impersonation: Microsoft (QR code)	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand PDF QR code Social engineering Computer Vision Header analysis QR code analysis Sender analysis
Brand impersonation: Microsoft quarantine release notification in body	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis File analysis Sender analysis
Brand impersonation: Microsoft quarantine release notification in image attachment	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Free file host Impersonation: Brand Social engineering Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis
Brand impersonation: Microsoft with embedded logo and credential theft language	Sublime Security	6mo ago Oct 17th, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Natural Language Understanding Sender analysis
Brand impersonation: Microsoft with low reputation links	Sublime Security	3mo ago Jan 12th, 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: Okta	Sublime Security	7mo ago Sep 23rd, 2025	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand Impersonation: PayPal	Sublime Security	25d ago Mar 30th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Computer Vision Content analysis File analysis Header analysis Sender analysis
Brand impersonation: PNC	Sublime Security	6mo ago Oct 9th, 2025	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand impersonation: Quickbooks	Sublime Security	3mo ago Jan 15th, 2026	Callback Phishing Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand impersonation: Robert Half	Sublime Security	6mo ago Oct 1st, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Sender analysis
Brand impersonation: Sharepoint	Sublime Security	3mo ago Jan 10th, 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	3mo ago Jan 12th, 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	5mo ago Nov 7th, 2025	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: Shein	Sublime Security	6mo ago Oct 15th, 2025	Credential Phishing Spam Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis

97 Rules

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