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
Service abuse: Google OAuth with suspicious redirect destination	Sublime Security	1mo ago Mar 12th, 2026	Credential Phishing Evasion Free file host Free subdomain host Open redirect Social engineering URL analysis Threat intelligence
Service abuse: Meetup.com redirect with brand impersonation	Sublime Security	10d 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	17d ago Apr 8th, 2026	Credential Phishing Malware/Ransomware Evasion Open redirect URL analysis
Service abuse: Monday.com infrastructure with phishing intent	Sublime Security	1mo 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	1mo ago Mar 6th, 2026	BEC/Fraud Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding URL analysis
Service abuse: SendGrid-formatted link with actor-controlled fragment	Sublime Security	5mo 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	1mo ago Mar 19th, 2026	Credential Phishing Social engineering Evasion Sender analysis HTML analysis Natural Language Understanding URL analysis
Service abuse: Vimeo with external plain-text links in message	Sublime Security	1mo ago Mar 6th, 2026	Credential Phishing Impersonation: Brand Social engineering Sender analysis Content analysis URL analysis
Service abuse: Wix redirect through bulk mailer domains	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion Open redirect URL analysis Sender analysis
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 link likely unrelated to sender	Sublime Security	3mo ago Jan 12th, 2026	BEC/Fraud Credential Phishing Impersonation: Employee Lookalike domain OneNote PDF Social engineering URL analysis Sender analysis Header analysis HTML 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: Commonly observed formatting of unauthorized free giveaways	Sublime Security	3mo ago Jan 14th, 2026	Spam Impersonation: Brand Social engineering Content analysis HTML analysis Sender analysis URL analysis
Spam: Fake dating profile notification	Sublime Security	1mo ago Mar 20th, 2026	Spam Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Spam: Fake photo share	Sublime Security	5mo ago Nov 8th, 2025	Spam Evasion Social engineering Content analysis Sender analysis URL analysis Whois
Spam: Firebase password reset from suspicious sender	Sublime Security	4mo 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	5mo 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: Link to blob.core.windows.net from new domain (<30d)	Sublime Security	9mo ago Jul 16th, 2025	Spam Free subdomain host Header analysis URL analysis Sender analysis
Spam: New job cold outreach from unsolicited sender	Sublime Security	6mo ago Sep 29th, 2025	Spam Content analysis Natural Language Understanding Sender analysis URL analysis
Spam: New link domain (<=10d) and emojis	Sublime Security	9mo ago Jul 16th, 2025	Spam Free email provider Content analysis Sender analysis URL analysis Whois
Spam: Single recipient duplicated in cc	Sublime Security	3mo ago Jan 12th, 2026	Spam Impersonation: Brand Social engineering Header analysis Content analysis URL analysis Sender analysis
Spam: Unsolicited WordPress account creation or password reset request	Sublime Security	5mo ago Nov 24th, 2025	Spam Social engineering Header analysis Sender analysis URL analysis
Spam: URL shortener with short body content and emojis	Sublime Security	3mo ago Jan 12th, 2026	Spam Free email provider Content analysis Sender analysis URL analysis
Suspicious attachment with unscannable Cloudflare link	Sublime Security	3mo 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 Links to Cloudflare R2 and Edge Services	Sublime Security	3mo ago Jan 12th, 2026	BEC/Fraud Callback Phishing Credential Phishing Extortion Malware/Ransomware Spam Free file host Header analysis Sender analysis URL analysis
Suspicious link to Looker Studio (lookerstudio.google.com) from a new and unsolicited sender	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering Content analysis Sender analysis URL analysis
Suspicious message with unscannable Cloudflare link	Sublime Security	7mo ago Sep 22nd, 2025	Credential Phishing Content analysis Header analysis URL analysis Sender analysis
Suspicious message with unscannable Vercel link	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Evasion Content analysis Header analysis Sender analysis URL analysis
Suspicious newly registered reply-to domain with engaging financial or urgent language	Sublime Security	3mo ago Jan 12th, 2026	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis Whois
Suspicious Office 365 app authorization (OAuth) link	Sublime Security	1mo ago Mar 5th, 2026	Credential Phishing URL analysis
Suspicious recipient pattern and language with low reputation link to login	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis URL screenshot
Suspicious recipients pattern with NLU credential theft indicators	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion Content analysis Header analysis Natural Language Understanding URL analysis
Suspicious recipients pattern with no Compauth pass and suspicious content	Sublime Security	3mo ago Jan 12th, 2026	Content analysis Computer Vision Header analysis Natural Language Understanding URL analysis URL screenshot
Suspicious SharePoint file sharing	Sublime Security	8mo ago Aug 5th, 2025	Credential Phishing Free email provider Free file host OneNote PDF Content analysis Header analysis Sender analysis URL analysis
Tax Form: W-8BEN solicitation	Sublime Security	2mo ago Feb 23rd, 2026	BEC/Fraud Credential Phishing Social engineering Content analysis Header analysis URL analysis
Truth Social infrastructure abuse via link redirect	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Malware/Ransomware Spam Evasion Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis
Twitter infrastructure abuse via link shortener	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Malware/Ransomware Spam Evasion Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis
URLhaus: Malicious domain in message body or pdf attachment (trusted reporters)	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware PDF File analysis Threat intelligence URL analysis
URL with Unicode U+2044 (⁄) or U+2215 (∕) characters	@delivr_to	3mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering Content analysis URL analysis
Vendor compromise: GovDelivery message with suspicious link	Sublime Security	8mo ago Aug 5th, 2025	Credential Phishing Malware/Ransomware Free subdomain host IPFS Social engineering Evasion Impersonation: Brand Natural Language Understanding URL analysis Whois
Xero infrastructure abuse	Sublime Security	5mo ago Nov 3rd, 2025	Credential Phishing Evasion Social engineering Content analysis Header analysis Natural Language Understanding URL analysis
Zoom Events newsletter abuse	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Free file host Free subdomain host Social engineering Impersonation: Brand Header analysis HTML analysis Natural Language Understanding URL analysis

442 Rules

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