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
Link: Gmail confidential mode message with job scam subject	Sublime Security	18d ago Oct 7th, 2026	BEC/Fraud Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis
Link: Google Forms link with credential theft language	Sublime Security	5mo ago May 11th, 2026	Credential Phishing Social engineering Natural Language Understanding Sender analysis URL analysis
Link: HR impersonation with suspicious domain indicators and credential theft	Sublime Security	10mo ago Dec 3rd, 2025	Credential Phishing Impersonation: Employee Social engineering Lookalike domain Content analysis Natural Language Understanding Computer Vision URL analysis URL screenshot
Link: Microsoft Dynamics 365 form phishing	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion Content analysis File analysis Optical Character Recognition Natural Language Understanding URL analysis URL screenshot
Link: Microsoft impersonation using hosted png with suspicious link	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis
Link: Mismatched free file host links with document lure	Sublime Security	2mo ago Aug 5th, 2026	BEC/Fraud Credential Phishing Free file host Social engineering Natural Language Understanding URL analysis Content 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 Buildin.ai	Sublime Security	1y ago Sep 5th, 2025	Credential Phishing Free file host Social engineering URL analysis Natural Language Understanding
Link: Multistage landing - FreshDesk knowledge base abuse	Sublime Security	1y ago Aug 21st, 2025	Credential Phishing Open redirect Impersonation: Brand Social engineering Content analysis Natural Language Understanding URL analysis URL screenshot
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: Multistage landing - Published Google Doc	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Free file host Social engineering Natural Language Understanding URL analysis Whois
Link: Multistage landing - Scribd document	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion Social engineering Impersonation: Brand Free file host URL analysis HTML analysis Natural Language Understanding Computer Vision Optical Character Recognition URL screenshot
Link: MyActiveCampaign Link Abuse	Sublime Security	1y ago Aug 20th, 2025	Credential Phishing Social engineering Natural Language Understanding URL 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: 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: QR Code with suspicious language (untrusted sender)	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Impersonation: Brand QR code Social engineering Content analysis Computer Vision Natural Language Understanding QR code analysis Sender analysis URL analysis
Link: Self-sender credential theft with configuration placeholder	Sublime Security	5mo ago May 27th, 2026	Credential Phishing Social engineering Evasion Natural Language Understanding Content analysis URL analysis Header analysis
Link: Self-sender with sender org in subject and credential theft indicator	Sublime Security	2mo ago Aug 25th, 2026	Credential Phishing Social engineering Evasion Natural Language Understanding Content analysis Sender analysis URL analysis Header analysis
Link: Single character path with credential theft body and self sender behavior or invalid recipient	Sublime Security	6mo ago Apr 24th, 2026	Credential Phishing Evasion Social engineering Natural Language Understanding URL analysis Sender analysis Header analysis
Link: Unsolicited email contains link leading to Tycoon URL structure	Sublime Security	7mo ago Mar 10th, 2026	Credential Phishing Evasion Social engineering Natural Language Understanding URL analysis
Link: URL shortener with copy-paste instructions and credential theft language	Sublime Security	8mo ago Feb 6th, 2026	Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding URL analysis
Mass campaign: recipient address in subject, body, and link (untrusted sender)	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Social engineering Header analysis Natural Language Understanding Sender analysis
Mismatched links: Free file share with urgent language	Sublime Security	1y ago Aug 5th, 2025	BEC/Fraud Callback Phishing Credential Phishing Extortion Malware/Ransomware Spam Free file host Social engineering Natural Language Understanding Sender analysis URL analysis
Open Redirect: Google domain with /url path and suspicious indicators	Sublime Security	11d ago Oct 14th, 2026	Credential Phishing Evasion Open redirect Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis
Prompt injection: Body instructions addressed to an AI	Sublime Security	4d ago Oct 21st, 2026	BEC/Fraud Evasion Social engineering Content analysis Natural Language Understanding Sender analysis
Prompt injection: Hidden instructions to an AI in body HTML	Sublime Security	4d ago Oct 21st, 2026	BEC/Fraud Evasion Social engineering Content analysis HTML analysis Natural Language Understanding Sender analysis
Prompt injection: Instructions to an AI in a calendar invite	Sublime Security	4d ago Oct 21st, 2026	BEC/Fraud Evasion Social engineering Content analysis File analysis Natural Language Understanding Sender analysis
QR Code with suspicious indicators	Sublime Security	6mo ago Apr 22nd, 2026	Credential Phishing QR code Social engineering Content analysis Header analysis Computer Vision Natural Language Understanding QR code analysis Sender analysis URL 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
Recruitee Infrastructure Abuse	Sublime Security	1y ago Jul 16th, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis Whois
Request for Quote or Purchase (RFQ\|RFP) with HTML smuggling attachment	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Evasion Content analysis File analysis HTML analysis Javascript analysis Natural Language Understanding URL analysis
Request for Quote or Purchase (RFQ\|RFP) with suspicious sender or recipient pattern	Sublime Security	27d ago Sep 28th, 2026	BEC/Fraud Evasion Free email provider Content analysis Natural Language Understanding URL 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: Piano giveaway	Sublime Security	10mo ago Dec 11th, 2025	BEC/Fraud Free email provider Content analysis Natural Language Understanding Sender 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
Service Abuse: American Express callback scam	Sublime Security	19d ago Oct 6th, 2026	Callback Phishing Impersonation: Brand Social engineering Natural Language Understanding Content 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: 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: AppSheet infrastructure with suspicious indicators	Sublime Security	1y ago Oct 6th, 2025	Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding URL analysis Whois
Service abuse: Arketa notification callback scam	Sublime Security	2mo ago Aug 19th, 2026	Callback Phishing Social engineering Impersonation: Brand Evasion Out of band pivot Natural Language Understanding Content analysis Sender analysis
Service abuse: AWS SNS callback scam impersonation	Sublime Security	2mo ago Aug 20th, 2026	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis
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: Calendly callback scam detection	Sublime Security	3mo ago Jul 14th, 2026	Callback Phishing Social engineering Impersonation: Brand Natural Language Understanding Sender 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: Elastic alerts extortion	Sublime Security	5mo ago May 21st, 2026	Extortion Impersonation: Brand Social engineering Natural Language Understanding Sender analysis
Service abuse: Evernote link	Sublime Security	2mo ago Aug 5th, 2026	Credential Phishing BEC/Fraud Social engineering URL analysis Natural Language Understanding
Service abuse: Facebook mail notification callback scam	Sublime Security	2mo ago Aug 25th, 2026	Callback Phishing Impersonation: Brand Social engineering Spoofing Sender analysis Natural Language Understanding
Service abuse: FileMail callback scam	Sublime Security	3mo ago Jul 24th, 2026	Callback Phishing Social engineering Free file host Out of band pivot Natural Language Understanding Sender analysis Content analysis
Service abuse: FlipHTML5 with attachment deception and credential theft language	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Social engineering Free file host Evasion Content analysis Natural Language Understanding URL analysis

312 Rules

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