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 Jan 23rd, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Brand impersonation: SendGrid	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Credential Phishing Spam Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/brand-impersonation-sendgrid-d800124f
Brand impersonation: Sharepoint	Sublime Security	13d ago Jan 10th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis File analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/brand-impersonation-sharepoint-284b1b70
Brand impersonation: SharePoint PDF attachment with credential theft language	Sublime Security	2mo ago Nov 7th, 2025	Credential Phishing Impersonation: Brand Social engineering PDF Evasion Computer Vision File analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis Header analysis Whois	/feeds/core/detection-rules/brand-impersonation-sharepoint-pdf-attachment-with-credential-theft-language-ae3756fa
Brand Impersonation: Shein	Sublime Security	3mo ago Oct 15th, 2025	Credential Phishing Spam Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/brand-impersonation-shein-b5843f22
Brand impersonation: Square	Sublime Security	3mo ago Oct 16th, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/brand-impersonation-square-63f9b449
Brand impersonation: Survey request with credential theft indicators	Sublime Security	2mo ago Nov 8th, 2025	Credential Phishing Social engineering Impersonation: Brand Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/brand-impersonation-survey-request-with-credential-theft-indicators-ea1c0e09
Brand impersonation: TikTok	Sublime Security	2mo ago Oct 30th, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/brand-impersonation-tiktok-aaacc8b7
Brand impersonation: Toronto-Dominion Bank	Sublime Security	3mo ago Oct 22nd, 2025	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/brand-impersonation-toronto-dominion-bank-2dc16a55
Brand impersonation: Trust Wallet	Sublime Security	5mo ago Aug 5th, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Natural Language Understanding Sender analysis Header analysis	/feeds/core/detection-rules/brand-impersonation-trust-wallet-e456974c
Brand impersonation: UK government Home Office	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Lookalike domain Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-uk-government-home-office-f35d846a
Brand impersonation: USPS	Sublime Security	3d ago Jan 20th, 2026	Credential Phishing Image as content Impersonation: Brand Social engineering Computer Vision Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/brand-impersonation-usps-28b9130a
Brand impersonation: Vanguard	Sublime Security	4mo ago Sep 22nd, 2025	BEC/Fraud Callback Phishing Credential Phishing Extortion Malware/Ransomware Spam Impersonation: Brand Natural Language Understanding Header analysis Sender analysis	/feeds/core/detection-rules/brand-impersonation-vanguard-3bd048fe
Brand impersonation: Wise	Sublime Security	1mo ago Dec 12th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/brand-impersonation-wise-01480f95
Brand impersonation: Zoom	Sublime Security	4mo ago Sep 22nd, 2025	Credential Phishing Impersonation: Brand Social engineering Evasion Computer Vision Content analysis HTML analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/brand-impersonation-zoom-5abad540
Business Email Compromise (BEC) attempt from untrusted sender	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/business-email-compromise-bec-attempt-from-untrusted-sender-96d4c35a
Business Email Compromise (BEC) with request for mobile number	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/business-email-compromise-bec-with-request-for-mobile-number-514ffd68
Business Email Compromise: Request for mobile number via reply thread hijacking	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/business-email-compromise-request-for-mobile-number-via-reply-thread-hijacking-0282f346
Callback phishing: Branded invoice from sender/reply-to domain less than 30 days old	Sublime Security	3mo ago Oct 17th, 2025	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Header analysis Natural Language Understanding Optical Character Recognition Whois	/feeds/core/detection-rules/callback-phishing-branded-invoice-from-senderreply-to-domain-less-than-30-days-old-e6f4af53
Callback phishing in body or attachment (untrusted sender)	Sublime Security	1d ago Jan 22nd, 2026	Callback Phishing Out of band pivot Social engineering Content analysis File analysis Optical Character Recognition Natural Language Understanding Sender analysis	/feeds/core/detection-rules/callback-phishing-in-body-or-attachment-untrusted-sender-b93c6f94
Callback phishing via calendar invite	Sublime Security	1d ago Jan 22nd, 2026	Callback Phishing Social engineering Evasion File analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/callback-phishing-via-calendar-invite-95c84360
Callback phishing via extensionless rfc822 attachment	Sublime Security	11d ago Jan 12th, 2026	Callback Phishing Impersonation: Brand Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/callback-phishing-via-extensionless-rfc822-attachment-197722c4
Callback phishing via Google Group abuse	Sublime Security	6mo ago Jul 16th, 2025	Callback Phishing Free email provider Impersonation: Brand Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/callback-phishing-via-google-group-abuse-199d873b
Callback phishing via Microsoft comment	Sublime Security	1mo ago Dec 16th, 2025	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/callback-phishing-via-microsoft-comment-8346c7b9
Callback phishing via Yammer comment	Sublime Security	11d ago Jan 12th, 2026	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Content analysis Natural Language Understanding Header analysis	/feeds/core/detection-rules/callback-phishing-via-yammer-comment-66650e2b
Canva design with suspicious embedded link	Sublime Security	3mo ago Sep 29th, 2025	Credential Phishing Evasion Social engineering Free file host HTML analysis URL analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/canva-design-with-suspicious-embedded-link-02959e22
Canva infrastructure abuse	Sublime Security	4mo ago Sep 5th, 2025	BEC/Fraud Callback Phishing Social engineering Impersonation: Brand Impersonation: Employee Free email provider Natural Language Understanding Sender analysis Content analysis	/feeds/core/detection-rules/canva-infrastructure-abuse-b69fdb5c
Cloud storage impersonation with credential theft indicators	Sublime Security	4mo ago Sep 22nd, 2025	Credential Phishing Free file host Image as content Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis	/feeds/core/detection-rules/cloud-storage-impersonation-with-credential-theft-indicators-4c20f72c
Commonly abused sender TLD with engaging language	Sublime Security	5mo ago Aug 7th, 2025	Credential Phishing Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis	/feeds/core/detection-rules/commonly-abused-sender-tld-with-engaging-language-447386dc
COVID-19 themed fraud with sender and reply-to mismatch or compensation award	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/covid-19-themed-fraud-with-sender-and-reply-to-mismatch-or-compensation-award-a16480ef
Credential phishing: DocuSign embedded image lure with no DocuSign domains in links	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/credential-phishing-docusign-embedded-image-lure-with-no-docusign-domains-in-links-dfe8715e
Credential phishing: Email delivery failure impersonation	Sublime Security	6mo ago Jul 16th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/credential-phishing-email-delivery-failure-impersonation-ee318b89
Credential phishing: Engaging language and other indicators (untrusted sender)	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/credential-phishing-engaging-language-and-other-indicators-untrusted-sender-c2bc8ca2
Credential phishing: Engaging language with IPFS link	Sublime Security	2y ago May 3rd, 2024	Credential Phishing Free file host Free subdomain host IPFS Content analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/credential-phishing-engaging-language-with-ipfs-link-996c4d83
Credential phishing: Fake password expiration from new and unsolicited sender	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/credential-phishing-fake-password-expiration-from-new-and-unsolicited-sender-5d9c3a75
Credential phishing: Generic document sharing	Sublime Security	1mo ago Dec 8th, 2025	Credential Phishing BEC/Fraud Social engineering Evasion Impersonation: Employee Content analysis Natural Language Understanding URL analysis Sender analysis	/feeds/core/detection-rules/credential-phishing-generic-document-sharing-9f0e1d2c
Credential phishing: Image as content, short or no body contents	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Image as content Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition	/feeds/core/detection-rules/credential-phishing-image-as-content-short-or-no-body-contents-01313f38
Credential phishing language and suspicious indicators (unknown sender)	Sublime Security	6mo ago Jul 16th, 2025	Credential Phishing Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/credential-phishing-language-and-suspicious-indicators-unknown-sender-89c186f7
Credential phishing: Onedrive impersonation	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Free subdomain host Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/credential-phishing-onedrive-impersonation-1f990c92
Credential phishing: Re-Authentication lure	Sublime Security	3mo ago Oct 17th, 2025	Credential Phishing Social engineering Impersonation: Brand Natural Language Understanding Content analysis URL analysis Header analysis Sender analysis	/feeds/core/detection-rules/credential-phishing-re-authentication-lure-2e45d3de
Credential phishing: 'Secure message' and engaging language	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Social engineering Natural Language Understanding Sender analysis	/feeds/core/detection-rules/credential-phishing-secure-message-and-engaging-language-bd95a7b1
Credential Phishing: Suspicious language, link, recipients and other indicators	Sublime Security	6mo ago Jul 16th, 2025	Credential Phishing Evasion Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/credential-phishing-suspicious-language-link-recipients-and-other-indicators-dcb39190
Credential phishing: Suspicious subject with urgent financial request and link	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/credential-phishing-suspicious-subject-with-urgent-financial-request-and-link-056464f4
Credential theft with 'safe content' deception and social engineering topics	Sublime Security	18d ago Jan 5th, 2026	Credential Phishing Social engineering Evasion Content analysis Natural Language Understanding	/feeds/core/detection-rules/credential-theft-with-safe-content-deception-and-social-engineering-topics-22ceee0d
Deceptive Dropbox mention	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Free file host Free subdomain host Social engineering Header analysis Content analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/deceptive-dropbox-mention-58a107bc
Domain impersonation: Freemail reply-to local lookalike with financial request	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/domain-impersonation-freemail-reply-to-local-lookalike-with-financial-request-43026a40
EML attachment with credential theft language (unknown sender)	Sublime Security	3mo ago Oct 3rd, 2025	Credential Phishing Evasion Social engineering Natural Language Understanding Sender analysis Content analysis Header analysis	/feeds/core/detection-rules/eml-attachment-with-credential-theft-language-unknown-sender-00e06af1
Employee impersonation with urgent request (untrusted sender)	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Impersonation: Employee Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/employee-impersonation-with-urgent-request-untrusted-sender-1ce9a146
Extortion / sextortion in attachment from untrusted sender	Sublime Security	5mo ago Aug 5th, 2025	Extortion Social engineering Spoofing Computer Vision Content analysis File analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/extortion-sextortion-in-attachment-from-untrusted-sender-3cb8d32c
Extortion / sextortion (untrusted sender)	Sublime Security	1d ago Jan 22nd, 2026	Extortion Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/extortion-sextortion-untrusted-sender-265913eb
Fake email quarantine notification	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/fake-email-quarantine-notification-73f26a3d

190 Rules

Page 2 of 4