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 Jun 8th, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Service abuse: DocSend share from newly registered domain	Sublime Security	4mo ago Jan 12th, 2026	BEC/Fraud Credential Phishing Evasion Free file host Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis
Service abuse: DocuSign notification with suspicious sender or document name	Sublime Security	10mo ago Aug 5th, 2025	Callback Phishing BEC/Fraud Evasion Social engineering Sender analysis Header analysis Content analysis
Service abuse: DocuSign share from an unsolicited reply-to address	Sublime Security	4mo ago Jan 12th, 2026	Credential Phishing Evasion Free file host Social engineering Content analysis Header analysis Sender analysis
Service abuse: Domains By Proxy sender	Sublime Security	2mo ago Mar 18th, 2026	Spam Credential Phishing BEC/Fraud Evasion Social engineering Header analysis Sender analysis
Service abuse: Dropbox Paper with copy-paste instructions	Sublime Security	1mo ago May 7th, 2026	Credential Phishing Social engineering Free file host Evasion Content analysis URL analysis
Service abuse: Dropbox share from an unsolicited reply-to address	Sublime Security	10mo ago Aug 5th, 2025	Callback Phishing BEC/Fraud Evasion Social engineering Sender analysis Header analysis Content analysis
Service abuse: Dropbox share from new domain	Sublime Security	4mo ago Jan 12th, 2026	Callback Phishing Credential Phishing BEC/Fraud Evasion Social engineering Content analysis Sender analysis Header analysis
Service abuse: Dropbox share with suspicious sender or document name	Sublime Security	4mo ago Jan 12th, 2026	Callback Phishing BEC/Fraud Evasion Social engineering Sender analysis Header analysis Content analysis
Service Abuse: ExactTarget with suspicious sender indicators	Sublime Security	7mo ago Nov 8th, 2025	Credential Phishing BEC/Fraud Evasion Social engineering Header analysis Sender analysis
Service abuse: FlipHTML5 with attachment deception and credential theft language	Sublime Security	4mo ago Jan 12th, 2026	Credential Phishing Social engineering Free file host Evasion Content analysis Natural Language Understanding URL analysis
Service abuse: Free provider with SendGrid routing	Sublime Security	5mo ago Jan 8th, 2026	Credential Phishing Free email provider Evasion Header analysis Sender analysis
Service Abuse: GoDaddy infrastructure	Sublime Security	5mo ago Jan 7th, 2026	Callback Phishing Extortion Evasion Natural Language Understanding Content analysis
Service abuse: Google application integration redirecting to suspicious hosts	Sublime Security	5mo ago Dec 17th, 2025	Credential Phishing Malware/Ransomware Evasion Free file host Free subdomain host Open redirect Header analysis Sender analysis URL analysis
Service abuse: Google OAuth with suspicious redirect destination	Sublime Security	13d ago May 27th, 2026	Credential Phishing Evasion Free file host Free subdomain host Open redirect Social engineering URL analysis Threat intelligence
Service abuse: HelloSign from an unsolicited sender address	Sublime Security	10mo ago Aug 5th, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service Abuse: HelloSign share with suspicious sender or document name	Sublime Security	12d ago May 28th, 2026	Callback Phishing BEC/Fraud Evasion Social engineering Sender analysis Header analysis Content analysis
Service abuse: HungerRush domain with SendGrid tracking targeting ProtonMail	Sublime Security	3mo ago Mar 4th, 2026	BEC/Fraud Evasion Sender analysis HTML analysis Content analysis
Service abuse: Linode Objects HTML file hosting	Sublime Security	4d ago Jun 5th, 2026	Credential Phishing Malware/Ransomware Free file host Evasion URL analysis Content analysis
Service abuse: Meetup.com redirect with brand impersonation	Sublime Security	1mo ago Apr 15th, 2026	Credential Phishing Open redirect Impersonation: Brand Evasion URL analysis HTML analysis Content analysis Sender analysis
Service abuse: Mimecast URL with excessive path length	Sublime Security	2mo ago Apr 8th, 2026	Credential Phishing Malware/Ransomware Evasion Open redirect URL analysis
Service abuse: Monday.com infrastructure with phishing intent	Sublime Security	3mo ago Mar 9th, 2026	Credential Phishing Evasion Social engineering QR code Content analysis File analysis Header analysis QR code analysis Sender analysis URL analysis
Service abuse: Nylas tracking subdomain with suspicious content	Sublime Security	3mo ago Mar 6th, 2026	BEC/Fraud Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding URL analysis
Service abuse: Payoneer callback scam	Sublime Security	1mo ago May 4th, 2026	Callback Phishing BEC/Fraud Evasion Social engineering Sender analysis Header analysis Content analysis
Service abuse: QuickBooks notification from new domain	Sublime Security	4mo ago Jan 12th, 2026	Callback Phishing Credential Phishing BEC/Fraud Evasion Social engineering Content analysis Sender analysis Header analysis
Service abuse: QuickBooks notification with suspicious comments	Sublime Security	4mo ago Jan 12th, 2026	Callback Phishing Credential Phishing BEC/Fraud Evasion Social engineering Content analysis Sender analysis Header analysis
Service abuse: SendGrid-formatted link with actor-controlled fragment	Sublime Security	6mo ago Nov 24th, 2025	Credential Phishing Evasion Social engineering Content analysis URL analysis
Service abuse: Substack credential theft with confusable characters and branded button redirects	Sublime Security	2mo ago Mar 19th, 2026	Credential Phishing Social engineering Evasion Sender analysis HTML analysis Natural Language Understanding URL analysis
Service abuse: SurveyMonkey survey from newly registered domain	Sublime Security	4mo 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	6mo ago Dec 2nd, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service abuse: Task management message sent via SendGrid	Sublime Security	8mo ago Oct 6th, 2025	Credential Phishing Impersonation: Brand Social engineering Evasion Content analysis Header analysis Sender analysis
Service abuse: Wix redirect through bulk mailer domains	Sublime Security	4mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion Open redirect URL analysis Sender analysis
Service abuse: Zoom with newly registered reply-to domain	Sublime Security	1mo ago May 4th, 2026	Spam Social engineering Evasion Sender analysis Header analysis Whois
Sharepoint file share with suspicious recipients pattern	Sublime Security	2y ago Mar 27th, 2024	Credential Phishing Malware/Ransomware Evasion Content analysis Header analysis URL analysis
Sharepoint online with external recipients and external display name	@vector_sec	3y ago Aug 17th, 2023	Credential Phishing Spam Evasion Content analysis Header analysis Sender analysis
Shopify infrastructure abuse	Sublime Security	2y ago Nov 13th, 2024	Credential Phishing Spam Evasion Free subdomain host Impersonation: Brand Social engineering Content analysis Header analysis URL analysis
Spam: BlackBaud infrastructure abuse	Sublime Security	4d ago Jun 5th, 2026	Spam Evasion Impersonation: Brand Image as content Social engineering Content analysis Header analysis
Spam: Fake photo share	Sublime Security	4d ago Jun 5th, 2026	Spam Evasion Social engineering Content analysis Sender analysis URL analysis Whois
Spam: Firebase password reset from suspicious sender	Sublime Security	6mo ago Dec 2nd, 2025	Credential Phishing Spam Evasion Social engineering Header analysis Sender analysis URL analysis
Spam/fraud: Predatory journal/research paper request	Sublime Security	7mo ago Nov 3rd, 2025	BEC/Fraud Spam Social engineering Impersonation: Brand Lookalike domain Evasion Natural Language Understanding Content analysis Sender analysis URL analysis Whois
Spam: Sendersrv.com with financial communications and unsubscribe language	Sublime Security	3mo ago Feb 24th, 2026	Spam Evasion Social engineering Header analysis Content analysis Natural Language Understanding Sender analysis
Spam: Unsolicited malformed PDF	Sublime Security	10mo ago Jul 16th, 2025	Spam Evasion Free email provider PDF Content analysis File analysis Sender analysis
Subject and sender display name contains matching long alphanumeric string	Sublime Security	4mo ago Jan 12th, 2026	Malware/Ransomware Credential Phishing Evasion Social engineering Content analysis Header analysis Sender analysis
Subject: Suspicious bracketed reference	Sublime Security	4mo ago Jan 12th, 2026	Credential Phishing Evasion Impersonation: Brand Header analysis Content analysis
Suspected cross-site scripting (XSS) found in subject	Sublime Security	1mo ago May 4th, 2026	Credential Phishing Evasion Scripting Content analysis Sender analysis
Suspected lookalike domain with suspicious language	Sublime Security	4mo ago Jan 12th, 2026	BEC/Fraud Evasion Lookalike domain Social engineering Content analysis Natural Language Understanding Sender analysis Whois
Suspicious attachment: Duplicate decoy PDF files	Sublime Security	10mo ago Aug 5th, 2025	Credential Phishing Evasion PDF File analysis Optical Character Recognition
Suspicious attachment with unscannable Cloudflare link	Sublime Security	4mo ago Jan 12th, 2026	Credential Phishing Evasion PDF Social engineering Impersonation: Employee Impersonation: VIP File analysis URL analysis Sender analysis Content analysis Header analysis Natural Language Understanding
Suspicious DocuSign share from new domain	Sublime Security	10mo ago Aug 5th, 2025	BEC/Fraud Credential Phishing Evasion Free file host Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis
Suspicious link to Looker Studio (lookerstudio.google.com) from a new and unsolicited sender	Sublime Security	4mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering Content analysis Sender analysis URL analysis
Suspicious message with unscannable Vercel link	Sublime Security	10mo ago Jul 16th, 2025	Credential Phishing Evasion Content analysis Header analysis Sender analysis URL analysis

414 Rules

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