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 Oct 21st, 2026

Feed Source

GitHub

Rule Name & Severity	Author	Last Updated	Labels
Reconnaissance: All recipients cc/bcc'd or undisclosed	Sublime Security	28d ago Sep 23rd, 2026	Reconnaissance Content analysis Header analysis Sender analysis
Reconnaissance: Empty message from uncommon sender	Sublime Security	7mo ago Feb 25th, 2026	Spam Evasion Social engineering Content analysis Header analysis
Reconnaissance: Fake real estate inquiry with empty body	Sublime Security	3mo ago Jul 8th, 2026	BEC/Fraud Social engineering Content analysis Sender analysis
Request for Quote or Purchase (RFQ\|RFP) with suspicious sender or recipient pattern	Sublime Security	23d ago Sep 28th, 2026	BEC/Fraud Evasion Free email provider Content analysis Natural Language Understanding URL analysis
Self-impersonation: Sender matches recipient with bolded name and suspicious link	Sublime Security	4mo ago Jun 16th, 2026	Credential Phishing Evasion Social engineering Header analysis HTML analysis Sender analysis
Self-sent fake PDF attachment with misleading link	Sublime Security	1mo ago Sep 9th, 2026	Credential Phishing Evasion Free subdomain host Social engineering Content analysis URL analysis Sender analysis
Service abuse: Adobe Creative Cloud share from an unsolicited sender address	Sublime Security	12mo ago Oct 22nd, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service abuse: Amazon invitation with suspected callback phishing	Sublime Security	5mo ago May 22nd, 2026	Callback Phishing Out of band pivot Social engineering Content analysis HTML analysis Sender analysis
Service abuse: Apple TestFlight with suspicious developer reference	Sublime Security	8mo ago Feb 6th, 2026	Spam Social engineering Content analysis HTML analysis Natural Language Understanding Sender analysis URL analysis
Service abuse: Cognito Forms with short body from unknown sender	Sublime Security	2mo ago Aug 4th, 2026	Credential Phishing Social engineering Content analysis Sender analysis URL analysis
Service abuse: Filemail file-sharing notifications	Sublime Security	5d ago Oct 16th, 2026	Malware/Ransomware BEC/Fraud Free file host Social engineering Spoofing Header analysis HTML analysis Content analysis
Service abuse: Google classroom solicitation	Sublime Security	9mo ago Jan 12th, 2026	Callback Phishing BEC/Fraud Impersonation: Brand Out of band pivot Social engineering Content analysis Header analysis Sender analysis
Service abuse: Google Firebase sender address with suspicious content	Sublime Security	4mo ago Jun 18th, 2026	Spam Credential Phishing Free subdomain host Social engineering Content analysis Header analysis HTML analysis Natural Language Understanding Sender analysis URL analysis Whois
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: HelloSign share with suspicious sender or document name	Sublime Security	4mo 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	7mo ago Mar 4th, 2026	BEC/Fraud Evasion Sender analysis HTML analysis Content analysis
Service abuse: Meetup.com redirect with brand impersonation	Sublime Security	6mo ago Apr 15th, 2026	Credential Phishing Open redirect Impersonation: Brand Evasion URL analysis HTML analysis Content analysis Sender analysis
Service abuse: Oracle Cloud Workflow callback scam	Sublime Security	3mo ago Jul 10th, 2026	Callback Phishing Social engineering Impersonation: Brand Sender analysis HTML analysis Natural Language Understanding
Service abuse: Payoneer callback scam	Sublime Security	23d ago Sep 28th, 2026	Callback Phishing BEC/Fraud Evasion Social engineering Sender analysis Header analysis Content analysis
Service abuse: QuickBooks notification with suspicious comments	Sublime Security	9mo ago Jan 12th, 2026	Callback Phishing Credential Phishing BEC/Fraud Evasion Social engineering Content analysis Sender analysis Header analysis
Service abuse: Soundestlink.com Microsoft impersonation	Sublime Security	2mo ago Aug 17th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering URL analysis Content analysis HTML analysis
Service abuse: Soundestlink redirect with suspicious indicators	Sublime Security	2mo ago Aug 11th, 2026	Credential Phishing Malware/Ransomware Evasion Header analysis HTML analysis
Service abuse: Substack credential theft with confusable characters and branded button redirects	Sublime Security	7mo ago Mar 19th, 2026	Credential Phishing Social engineering Evasion Sender analysis HTML analysis Natural Language Understanding URL analysis
Service abuse: SurveyMonkey with suspicious outbound links	Sublime Security	3mo ago Jul 8th, 2026	Credential Phishing Social engineering Impersonation: Brand Content analysis HTML analysis Sender analysis URL analysis
Service abuse: Suspicious Zoom Docs link	Sublime Security	10mo ago Dec 2nd, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service abuse: Trello board invitation with VIP impersonation	Sublime Security	12d ago Oct 9th, 2026	Credential Phishing Impersonation: VIP Social engineering Content analysis Header analysis HTML analysis Sender analysis
Service abuse: Wufoo credential theft	Sublime Security	2mo ago Aug 5th, 2026	Credential Phishing Social engineering Content analysis HTML analysis Natural Language Understanding Sender analysis
Sharepoint link likely unrelated to sender	Sublime Security	28d ago Sep 23rd, 2026	BEC/Fraud Credential Phishing Impersonation: Employee Lookalike domain OneNote PDF Social engineering URL analysis Sender analysis Header analysis HTML analysis
Spam: Attendee list solicitation	Sublime Security	1y ago Aug 29th, 2025	Spam Content analysis Sender analysis
Spam: Campaign with excessive space/char obfuscation and free file hosted link	Sublime Security	9mo ago Jan 12th, 2026	Spam Free file host Content analysis Sender analysis
Spam: Commonly observed formatting of unauthorized free giveaways	Sublime Security	9mo ago Jan 14th, 2026	Spam Impersonation: Brand Social engineering Content analysis HTML analysis Sender analysis URL analysis
Spam: Fake photo share	Sublime Security	13d ago Oct 8th, 2026	Spam Evasion Social engineering Content analysis Sender analysis URL analysis Whois
Spam/fraud: Predatory journal/research paper request	Sublime Security	11mo 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: Item giveaway spam template	Sublime Security	28d ago Sep 23rd, 2026	Spam Image as content Content analysis HTML analysis Sender analysis Exif analysis
Spam: Large financial amount mention from newly registered sender domain	Sublime Security	2mo ago Aug 3rd, 2026	BEC/Fraud Spam Social engineering Content analysis Sender analysis Whois
Spam: Unsolicited WordPress account creation or password reset request	Sublime Security	11mo ago Nov 24th, 2025	Spam Social engineering Header analysis Sender analysis URL analysis
Spam: Website errors solicitation	Sublime Security	2mo ago Jul 27th, 2026	Spam Content analysis Sender analysis Natural Language Understanding
Spoofing: Hidden Outlook headers in self-addressed forwards	Sublime Security	15d ago Oct 6th, 2026	BEC/Fraud Credential Phishing Spoofing Evasion Impersonation: Employee Social engineering Header analysis HTML analysis XML analysis Sender analysis Natural Language Understanding
Suspicious invoice reference with missing or image-only attachments	Sublime Security	28d ago Sep 23rd, 2026	Credential Phishing Social engineering Content analysis Computer Vision File analysis Natural Language Understanding Sender analysis
Tax Form: W-8BEN solicitation	Sublime Security	8mo ago Feb 23rd, 2026	BEC/Fraud Credential Phishing Social engineering Content analysis Header analysis URL analysis
Unicode QR code	Sublime Security	1y ago Aug 25th, 2025	Credential Phishing Evasion Content analysis Sender analysis QR code analysis
Venmo payment request abuse	Sublime Security	5mo ago May 4th, 2026	Callback Phishing BEC/Fraud Social engineering Impersonation: Brand Evasion Natural Language Understanding Content analysis Sender analysis HTML analysis
VIP impersonation: Fake forwarded indicator with VIP recipient impersonation	Sublime Security	3mo ago Jul 7th, 2026	BEC/Fraud Impersonation: VIP Social engineering Evasion Content analysis Sender analysis
VIP impersonation: Fake thread with display name match, email mismatch	Sublime Security	6mo ago Apr 3rd, 2026	BEC/Fraud Evasion Impersonation: VIP Social engineering Spoofing Content analysis Header analysis Sender analysis Whois
VIP impersonation: VIP name within a delimited subject with fake previous threads	Sublime Security	5d ago Oct 16th, 2026	BEC/Fraud Impersonation: VIP Social engineering Spoofing Content analysis Sender analysis Header analysis
VIP impersonation: VIP recipient of previous thread with HTML generator	Sublime Security	3mo ago Jul 7th, 2026	BEC/Fraud Impersonation: VIP Social engineering Evasion HTML analysis Content analysis Sender analysis
VIP impersonation with charitable donation fraud	Sublime Security	4mo ago Jun 5th, 2026	BEC/Fraud Impersonation: Employee Impersonation: VIP Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Zoom Events newsletter abuse	Sublime Security	3mo 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

198 Rules

Page 4 of 4