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
Honorific greeting BEC attempt with sender and reply-to mismatch	Sublime Security	1mo ago Sep 23rd, 2026	BEC/Fraud Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
HR impersonation via e-sign agreement comment	Sublime Security	4mo ago Jun 5th, 2026	BEC/Fraud Credential Phishing Evasion Impersonation: Brand Out of band pivot Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Impersonation: Australian Federal Police with criminal case language	Sublime Security	4mo ago Jun 4th, 2026	BEC/Fraud Extortion Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Impersonation: Chrome Web Store policy	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Impersonation: Brand Free email provider Lookalike domain Content analysis Header analysis HTML analysis Sender analysis URL analysis
Impersonation: Executive using numbered local part	Sublime Security	8mo ago Jan 30th, 2026	BEC/Fraud Free email provider Impersonation: VIP Social engineering Header analysis Sender analysis
Impersonation: HR administrative center PDF password lure	Sublime Security	1mo ago Aug 28th, 2026	Credential Phishing Impersonation: Brand PDF Social engineering Evasion Content analysis Header analysis Sender analysis
Impersonation: Human Resources with link or attachment and engaging language	Sublime Security	4mo ago Jun 5th, 2026	BEC/Fraud Credential Phishing Impersonation: Employee Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Impersonation: Internal corporate services	Sublime Security	3mo ago Jul 22nd, 2026	Credential Phishing Impersonation: Employee Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Impersonation: Legal firm with copyright infringement notice	Sublime Security	4mo ago Jun 24th, 2026	BEC/Fraud Extortion Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis
Impersonation: SAM/SBA federal registration	Sublime Security	1mo ago Sep 11th, 2026	Credential Phishing BEC/Fraud Impersonation: Brand Social engineering Image as content Sender analysis Content analysis HTML analysis Header analysis
Impersonation: SharePoint reply header anomaly	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Social engineering Impersonation: Brand Evasion Spoofing Header analysis Content analysis Sender analysis
Impersonation: Suspected supplier impersonation with suspicious content	Sublime Security	2mo ago Jul 27th, 2026	BEC/Fraud Evasion Free email provider Lookalike domain Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis Whois
Impersonation using recipient domain (untrusted sender)	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Social engineering Header analysis Sender analysis
Inbound message from popular service via newly observed distribution list	Sublime Security	1y ago Aug 5th, 2025	Callback Phishing Evasion Social engineering Header analysis Sender analysis
Invoicera infrastructure abuse	Sublime Security	2y ago Mar 7th, 2024	Credential Phishing Spam Free file host Free subdomain host Image as content Social engineering Content analysis Header analysis Sender analysis
Job scam (unsolicited sender)	Sublime Security	11mo ago Nov 3rd, 2025	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Job scam with specific salary pattern	Sublime Security	10d ago Oct 15th, 2026	BEC/Fraud Social engineering Content analysis Natural Language Understanding Header analysis Sender analysis
Link abuse: Self-service creation platform link with suspicious recipient behavior	Sublime Security	10mo ago Dec 2nd, 2025	BEC/Fraud Credential Phishing Spam Free email provider Social engineering Header analysis Sender analysis URL analysis
Link: Base64 encoded recipient address in URL fragment with subject hash	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Encryption Evasion Social engineering Content analysis URL analysis Header analysis
Link: BEC with newly registered domains and financial keywords	Sublime Security	5mo ago May 1st, 2026	BEC/Fraud Social engineering Evasion Spoofing Header analysis Sender analysis URL analysis
Link: Credential phishing link with undisclosed recipients	Sublime Security	2mo ago Aug 24th, 2026	Credential Phishing Evasion Computer Vision Header analysis URL screenshot
Link: Credential phishing traversing Russian infrastructure	Sublime Security	27d ago Sep 28th, 2026	Credential Phishing Social engineering Content analysis Header analysis Natural Language Understanding URL analysis
Link: Credential phishing via WordPress	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Social engineering Free subdomain host URL analysis Header analysis Computer Vision
Link: Cryptocurrency fraud with suspicious links	Sublime Security	10mo ago Dec 1st, 2025	BEC/Fraud Social engineering Evasion Free subdomain host Scripting Content analysis Header analysis Javascript analysis Natural Language Understanding Sender analysis URL analysis URL screenshot Whois
Link: Direct link to riddle.com hosted showcase	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Free file host Sender analysis URL analysis Header analysis
Link: Direct link to Zoom Docs from non-Zoom sender	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Social engineering Impersonation: Brand Header analysis URL analysis Sender analysis
Link: Display text matches subject line	Sublime Security	11mo ago Nov 14th, 2025	BEC/Fraud Credential Phishing Social engineering Evasion Header analysis Content analysis Natural Language Understanding URL analysis
Link: Executable file download with suspicious message content	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Malware/Ransomware Evasion Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis Header analysis
Link: Fake Cloudflare verification landing page	Sublime Security	1mo ago Sep 11th, 2026	Credential Phishing Social engineering URL analysis HTML analysis Header analysis Content analysis
Link: Fake RFP/bid reference number lure	Sublime Security	2mo ago Aug 25th, 2026	Credential Phishing BEC/Fraud Spam Social engineering Impersonation: Brand Spoofing Content analysis URL analysis Header analysis Sender analysis
Link: File sharing impersonation with suspicious language and sending patterns	Sublime Security	5mo ago Apr 30th, 2026	BEC/Fraud Credential Phishing Social engineering Free subdomain host Impersonation: Brand Natural Language Understanding URL analysis Sender analysis Header analysis Content analysis
Link: Free file hosting with undisclosed recipients	Sublime Security	7mo ago Mar 19th, 2026	Credential Phishing Malware/Ransomware Free file host Free subdomain host Evasion Header analysis URL analysis Sender analysis Natural Language Understanding
Link: Free subdomain host with undisclosed recipients	Sublime Security	9mo ago Jan 12th, 2026	Free subdomain host Header analysis URL analysis
Link: Generic financial document with proceedural timeline template	Sublime Security	3mo ago Jul 10th, 2026	BEC/Fraud Credential Phishing Social engineering Evasion Content analysis Natural Language Understanding Header analysis Sender analysis
Link: Gmail confidential mode message with suspicious recipient patterns	Sublime Security	18d ago Oct 7th, 2026	Credential Phishing Evasion Social engineering Header analysis Sender analysis URL analysis
Link: Invalid reply-to with recipient details in subject, body, and encoded link	Sublime Security	3mo ago Jul 16th, 2026	Credential Phishing BEC/Fraud Social engineering Evasion Spoofing Header analysis Content analysis URL analysis Sender analysis
Link: Microsoft protected message with suspicious recipient patterns	Sublime Security	1mo ago Aug 27th, 2026	Credential Phishing Evasion Social engineering Content analysis File analysis Header analysis Sender analysis URL analysis
Link: Mismatched Shopify template button href	Sublime Security	2mo ago Aug 20th, 2026	Credential Phishing Evasion Social engineering HTML analysis URL analysis Header analysis Sender analysis
Link: Monday hosted link with suspicious content	Sublime Security	18d ago Oct 7th, 2026	Credential Phishing BEC/Fraud Social engineering Natural Language Understanding URL analysis Header analysis
Link: Multistage landing - Abused Adobe Acrobat hosted PDF	Sublime Security	1mo ago Sep 11th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Optical Character Recognition URL analysis Header analysis Sender analysis
Link: Multistage landing - Ludus presentation	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion Social engineering Impersonation: Brand Header analysis URL analysis Computer Vision URL screenshot Natural Language Understanding Optical Character Recognition Sender analysis
Link: Observed URL path (lht) with recipient email address	Sublime Security	19d ago Oct 6th, 2026	Credential Phishing Social engineering Impersonation: Brand Evasion Spoofing URL analysis Content analysis Header analysis
Link: .onion From Unsolicited Sender	Sublime Security	1mo ago Sep 23rd, 2026	Malware/Ransomware Credential Phishing Evasion Social engineering URL analysis Header analysis Sender analysis
Link: PDF filename impersonation with credential theft language	Sublime Security	8mo ago Feb 12th, 2026	Credential Phishing Social engineering Evasion PDF Content analysis Natural Language Understanding Header analysis Sender analysis URL analysis
Link: Personalized URL with recipient address on commonly abused web service	Sublime Security	6mo ago Apr 1st, 2026	Credential Phishing Malware/Ransomware Free file host Social engineering URL analysis Header analysis
Link: Personal SharePoint with invalid recipients and credential theft language	Sublime Security	9mo ago Jan 23rd, 2026	Credential Phishing Social engineering Content analysis Header analysis Natural Language Understanding URL analysis
Link: Possible Intuit link abuse	Sublime Security	20d ago Oct 5th, 2026	Credential Phishing Impersonation: Brand Social engineering URL analysis Natural Language Understanding Content analysis Header analysis
Link: Recipient domain in URL path	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Lookalike domain Header analysis Sender analysis URL analysis
Link: Referrer anonymization service from untrusted sender	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Open redirect Evasion Header analysis URL analysis Sender analysis
Link: Romance/Sexual Language With Suspicious Link	Sublime Security	26d ago Sep 29th, 2026	Spam Social engineering Content analysis Header analysis URL analysis Whois

466 Rules

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