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 23rd, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Reconnaissance: Numeric-hex reference code subject	Sublime Security	1mo ago Sep 21st, 2026	BEC/Fraud Spam Social engineering Header analysis
Reconnaissance: Short generic greeting message	Sublime Security	1mo ago Aug 27th, 2026	BEC/Fraud Callback Phishing Social engineering Free email provider Content analysis Header analysis Natural Language Understanding Sender analysis
Russia return-path TLD (untrusted sender)	Sublime Security	8mo ago Feb 13th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Header analysis Sender analysis
Salesforce infrastructure abuse	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion Social engineering Content analysis Header analysis Natural Language Understanding URL analysis
Scam: Fake estate sale offering welding equipment and tools	Sublime Security	11d ago Oct 14th, 2026	BEC/Fraud Social engineering Free email provider Out of band pivot Content analysis Sender analysis Header analysis
Scam soliciting employer review/rating	Sublime Security	4mo ago Jun 12th, 2026	BEC/Fraud Credential Phishing Social engineering Impersonation: Brand Content analysis Natural Language Understanding Header analysis Sender 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-sender with copy/paste instructions and suspicious domains (French/Français)	Sublime Security	6mo ago Apr 16th, 2026	Credential Phishing Evasion Free subdomain host Social engineering Content analysis Header analysis Sender analysis
Sender: Local part built from recipient domain and mailbox	Sublime Security	2mo ago Aug 20th, 2026	BEC/Fraud Credential Phishing Spoofing Evasion Impersonation: Employee Header analysis Sender analysis
Sendgrid onmicrosoft.com domain phishing	@ajpc500	9mo ago Jan 12th, 2026	Credential Phishing Evasion Header analysis
Sendgrid voicemail phish	Sublime Security	11mo ago Nov 24th, 2025	Credential Phishing Social engineering Content analysis Header analysis
Service abuse: Adobe Creative Cloud share from an unsolicited sender address	Sublime Security	1y ago Oct 22nd, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service abuse: Adobe legitimate domain with document approval language	Sublime Security	9mo ago Jan 23rd, 2026	BEC/Fraud Credential Phishing Social engineering Content analysis Header analysis Sender analysis
Service abuse: Adobe message from newly registered domain	Sublime Security	2mo ago Jul 31st, 2026	Credential Phishing Evasion Social engineering Lookalike domain Sender analysis Header analysis URL analysis Whois
Service abuse: Adobe Sign notification from an unsolicited reply-to address	Sublime Security	1y ago Aug 5th, 2025	BEC/Fraud Callback Phishing Spam Social engineering Impersonation: Brand Header analysis Sender analysis
Service abuse: Apple callback scam	Sublime Security	26d ago Sep 29th, 2026	Callback Phishing Social engineering Out of band pivot Sender analysis Header analysis Natural Language Understanding
Service Abuse: Box file sharing with credential phishing intent	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing BEC/Fraud Callback Phishing Evasion Social engineering Impersonation: Employee Impersonation: VIP Content analysis Natural Language Understanding Sender analysis Header analysis
Service abuse: Cisco secure email service with financial request	Sublime Security	1y ago Oct 1st, 2025	BEC/Fraud Impersonation: Brand Social engineering Evasion Content analysis Header analysis Natural Language Understanding Sender analysis
Service abuse: DocSend share from an unsolicited reply-to address	Sublime Security	4mo ago Jun 18th, 2026	Credential Phishing Evasion Free file host Social engineering Content analysis Header analysis Sender analysis
Service abuse: DocSend share from newly registered domain	Sublime Security	9mo 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	1y 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	9mo 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	7mo ago Mar 18th, 2026	Spam Credential Phishing BEC/Fraud Evasion Social engineering Header analysis Sender analysis
Service abuse: Dropbox share from an unsolicited reply-to address	Sublime Security	1y 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	9mo 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	27d ago Sep 28th, 2026	Callback Phishing BEC/Fraud Evasion Social engineering Sender analysis Header analysis Content analysis
Service Abuse: ExactTarget with suspicious sender indicators	Sublime Security	11mo ago Nov 8th, 2025	Credential Phishing BEC/Fraud Evasion Social engineering Header analysis Sender analysis
Service abuse: Filemail file-sharing notifications	Sublime Security	9d ago Oct 16th, 2026	Malware/Ransomware BEC/Fraud Free file host Social engineering Spoofing Header analysis HTML analysis Content analysis
Service abuse: Free provider with SendGrid routing	Sublime Security	9mo ago Jan 8th, 2026	Credential Phishing Free email provider Evasion Header analysis Sender analysis
Service abuse: GitHub notification with excessive mentions and suspicious links	Sublime Security	6mo ago Apr 7th, 2026	Credential Phishing Malware/Ransomware Free file host Free subdomain host Social engineering Header analysis URL analysis Sender analysis Whois
Service abuse: Google account notification with links to free file host	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Impersonation: Brand Social engineering Free file host Header analysis URL analysis Sender analysis
Service abuse: Google application integration redirecting to suspicious hosts	Sublime Security	10mo 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 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 Drive share from an unsolicited reply-to address	Sublime Security	1y ago Aug 5th, 2025	BEC/Fraud Callback Phishing Credential Phishing Free email provider Social engineering Free file host Header analysis Sender analysis
Service abuse: Google Drive share from new reply-to domain	Sublime Security	11mo ago Nov 13th, 2025	BEC/Fraud Callback Phishing Credential Phishing Free email provider Social engineering Free file host Header analysis Sender analysis Whois
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: Kagoya.net-hosted domains sending English business lures	Sublime Security	1mo ago Aug 27th, 2026	BEC/Fraud Spam Impersonation: Brand Social engineering Spoofing Natural Language Understanding Header analysis Sender analysis
Service abuse: Monday.com infrastructure with phishing intent	Sublime Security	25d ago Sep 30th, 2026	Credential Phishing Evasion Social engineering QR code Content analysis File analysis Header analysis QR code analysis Sender analysis URL analysis
Service abuse: Notion free-tier account impersonating VIP	Sublime Security	2mo ago Aug 14th, 2026	Credential Phishing Impersonation: VIP Social engineering Sender analysis Header analysis URL analysis Content analysis
Service abuse: Outlook Groups with Google Sites link and evasion tag	Sublime Security	4mo ago Jun 17th, 2026	Credential Phishing Evasion Free subdomain host Social engineering Content analysis Header analysis URL analysis Sender analysis
Service abuse: Payoneer callback scam	Sublime Security	27d ago Sep 28th, 2026	Callback Phishing BEC/Fraud Evasion Social engineering Sender analysis Header analysis Content analysis
Service abuse: Postman reply-to mismatch with credential theft intent	Sublime Security	2mo ago Jul 29th, 2026	Credential Phishing Social engineering Out of band pivot Sender analysis Header analysis Natural Language Understanding
Service abuse: QuickBooks notification from new domain	Sublime Security	9mo 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	9mo ago Jan 12th, 2026	Callback Phishing Credential Phishing BEC/Fraud Evasion Social engineering Content analysis Sender analysis Header analysis
Service abuse: Recruiting with suspicious language patterns from legitimate platforms	Sublime Security	1y ago Oct 7th, 2025	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Service abuse: Roomsy with unrelated body content	Sublime Security	10mo ago Dec 2nd, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Header analysis Sender analysis Natural Language Understanding
Service abuse: Sendgrid credential theft with personalized request targeting single recipient	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Social engineering Header analysis Natural Language Understanding Sender analysis Content analysis
Service abuse: SendGrid impersonation via Sendgrid from new sender	Sublime Security	2mo ago Aug 3rd, 2026	Credential Phishing Impersonation: Brand Social engineering Header analysis Sender analysis

466 Rules

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