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 Mar 9th, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Brand impersonation: Zoom	Sublime Security	5mo 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
Brand impersonation: Zoom (strict)	Sublime Security	2y ago Aug 4th, 2024	Credential Phishing Impersonation: Brand Social engineering Sender analysis	/feeds/core/detection-rules/brand-impersonation-zoom-strict-00f3d94f
Brand impersonation: Zoom via HTML styling	Sublime Security	11d ago Feb 27th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis HTML analysis	/feeds/core/detection-rules/brand-impersonation-zoom-via-html-styling-b717920d
Brand impersonation: Zoom via lookalike domain	Sublime Security	4d ago Mar 6th, 2026	Credential Phishing Impersonation: Brand Free email provider Social engineering URL analysis Sender analysis	/feeds/core/detection-rules/brand-impersonation-zoom-via-lookalike-domain-b9d5e4b5
Business Email Compromise (BEC) attempt from unsolicited sender	Sublime Security	7mo ago Jul 16th, 2025	BEC/Fraud Social engineering Spoofing Content analysis File analysis Header analysis Sender analysis	/feeds/core/detection-rules/business-email-compromise-bec-attempt-from-unsolicited-sender-57eccc45
Business Email Compromise (BEC) attempt from untrusted sender	Sublime Security	1mo 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) attempt from untrusted sender (French/Français)	Sublime Security	7mo ago Jul 16th, 2025	BEC/Fraud Social engineering Content analysis Header analysis Sender analysis	/feeds/core/detection-rules/business-email-compromise-bec-attempt-from-untrusted-sender-frenchfrancais-b7d1e096
Business Email Compromise (BEC) with request for mobile number	Sublime Security	1mo 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	1mo 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: AOL senders with suspicious HTML template or PDF attachment	Sublime Security	1mo ago Jan 12th, 2026	Callback Phishing Free email provider Social engineering Content analysis Header analysis File analysis HTML analysis Exif analysis Sender analysis	/feeds/core/detection-rules/callback-phishing-aol-senders-with-suspicious-html-template-or-pdf-attachment-f6044eed
Callback phishing: Branded invoice from sender/reply-to domain less than 30 days old	Sublime Security	4mo 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	1mo 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: Social Security Administration fraud	Sublime Security	1mo ago Jan 12th, 2026	Callback Phishing Evasion Free email provider Out of band pivot PDF Social engineering Exif analysis File analysis Optical Character Recognition Sender analysis	/feeds/core/detection-rules/callback-phishing-social-security-administration-fraud-a9049d52
Callback phishing solicitation in message body	Sublime Security	4mo ago Oct 17th, 2025	Callback Phishing Free email provider Impersonation: Brand Out of band pivot Social engineering File analysis Sender analysis	/feeds/core/detection-rules/callback-phishing-solicitation-in-message-body-10a3a446
Callback phishing: SumUp infrastructure abuse	Sublime Security	6mo ago Sep 5th, 2025	BEC/Fraud Callback Phishing Evasion Social engineering Content analysis Header analysis Sender analysis	/feeds/core/detection-rules/callback-phishing-sumup-infrastructure-abuse-1c41649e
Callback phishing via Adobe Sign comment	Sublime Security	1mo ago Jan 12th, 2026	Callback Phishing Evasion Impersonation: Brand Out of band pivot Social engineering Content analysis Computer Vision Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/callback-phishing-via-adobe-sign-comment-7eb4516d
Callback phishing via calendar invite	Sublime Security	1mo 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 DocuSign comment	Sublime Security	1mo ago Jan 12th, 2026	Callback Phishing Evasion Impersonation: Brand Out of band pivot Social engineering Content analysis Computer Vision Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/callback-phishing-via-docusign-comment-48aec918
Callback phishing via e-signature service	Sublime Security	1mo ago Jan 12th, 2026	Callback Phishing Free email provider Impersonation: Brand Social engineering Content analysis Computer Vision Header analysis Optical Character Recognition	/feeds/core/detection-rules/callback-phishing-via-e-signature-service-ed37b4fd
Callback phishing via extensionless rfc822 attachment	Sublime Security	1mo 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	7mo 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 Intuit service abuse	Sublime Security	1mo ago Jan 12th, 2026	Callback Phishing Evasion Free email provider Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Optical Character Recognition	/feeds/core/detection-rules/callback-phishing-via-intuit-service-abuse-f2fe1294
Callback phishing via Microsoft comment	Sublime Security	2mo 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 Signable E-Signature Request	Sublime Security	1mo ago Jan 12th, 2026	Callback Phishing Exploit Impersonation: Brand Out of band pivot Social engineering Computer Vision Content analysis Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/callback-phishing-via-signable-e-signature-request-4599575d
Callback phishing via SignFree e-signature request	Sublime Security	1mo ago Jan 12th, 2026	Callback Phishing Exploit Impersonation: Brand Out of band pivot Social engineering Computer Vision Content analysis Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/callback-phishing-via-signfree-e-signature-request-21381c37
Callback phishing via Xodo Sign comment	Sublime Security	1mo ago Jan 12th, 2026	Callback Phishing Exploit Impersonation: Brand Out of band pivot Social engineering Computer Vision Content analysis Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/callback-phishing-via-xodo-sign-comment-6f722c5d
Callback phishing via Yammer comment	Sublime Security	1mo 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
Callback phishing via Zelle Service Abuse	Sublime Security	1mo ago Jan 12th, 2026	BEC/Fraud Callback Phishing Evasion Social engineering Content analysis Header analysis Sender analysis	/feeds/core/detection-rules/callback-phishing-via-zelle-service-abuse-08727484
Callback phishing via Zoho service abuse	Sublime Security	1mo ago Jan 12th, 2026	Callback Phishing Evasion Free email provider Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Optical Character Recognition	/feeds/core/detection-rules/callback-phishing-via-zoho-service-abuse-61e351ec
Callback Phishing via Zoom comment	Sublime Security	27d ago Feb 11th, 2026	Callback Phishing Out of band pivot Social engineering Impersonation: Brand Computer Vision Content analysis Header analysis Sender analysis	/feeds/core/detection-rules/callback-phishing-via-zoom-comment-8ec30881
Callback scam: Impersonation via TimeTrade infrastructure	Sublime Security	6mo ago Aug 20th, 2025	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Content analysis Sender analysis Header analysis	/feeds/core/detection-rules/callback-scam-impersonation-via-timetrade-infrastructure-0c0b3664
Canva design with suspicious embedded link	Sublime Security	5mo 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	1mo ago Feb 6th, 2026	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
Catbox.moe link from untrusted source	Sublime Security	7mo ago Aug 5th, 2025	Malware/Ransomware Free file host Social engineering Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/catboxmoe-link-from-untrusted-source-d6041a8b
ClickFunnels link infrastructure abuse	Sublime Security	1mo ago Feb 5th, 2026	Credential Phishing Free email provider Free subdomain host Social engineering Content analysis Header analysis QR code analysis Sender analysis URL analysis	/feeds/core/detection-rules/clickfunnels-link-infrastructure-abuse-9192fbe9
Cloud storage impersonation with credential theft indicators	Sublime Security	18d ago Feb 20th, 2026	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	7mo 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
Compensation review with QR code in attached EML	Sublime Security	3mo ago Nov 26th, 2025	Credential Phishing QR code Social engineering Computer Vision Content analysis Optical Character Recognition QR code analysis	/feeds/core/detection-rules/compensation-review-with-qr-code-in-attached-eml-98a2f03c
Constant Contact link infrastructure abuse	Sublime Security	4mo ago Oct 17th, 2025	Credential Phishing Free email provider Open redirect Social engineering Content analysis Header analysis QR code analysis Sender analysis	/feeds/core/detection-rules/constant-contact-link-infrastructure-abuse-8c5e8e4c
COVID-19 themed fraud with sender and reply-to mismatch or compensation award	Sublime Security	1mo 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: Blue button styled link with file-sharing template artifacts	Sublime Security	15h ago Mar 9th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis HTML analysis URL analysis	/feeds/core/detection-rules/credential-phishing-blue-button-styled-link-with-file-sharing-template-artifacts-370f6c07
Credential phishing content and link (untrusted sender)	Sublime Security	2mo ago Dec 17th, 2025	Credential Phishing Social engineering Computer Vision Sender analysis URL analysis URL screenshot	/feeds/core/detection-rules/credential-phishing-content-and-link-untrusted-sender-f0c95bb7
Credential phishing: DocuSign embedded image lure with no DocuSign domains in links	Sublime Security	1mo 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	7mo 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	1mo 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: Fake password expiration from new and unsolicited sender	Sublime Security	1mo 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: Fake storage alerts (unsolicited)	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Social engineering Content analysis Sender analysis	/feeds/core/detection-rules/credential-phishing-fake-storage-alerts-unsolicited-750f04d6
Credential phishing: Generic document sharing	Sublime Security	24d ago Feb 14th, 2026	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: Hyper-linked image leading to free file host	Sublime Security	7mo ago Aug 5th, 2025	Credential Phishing Evasion Free file host Image as content Social engineering Content analysis Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/credential-phishing-hyper-linked-image-leading-to-free-file-host-f5cb1eca
Credential phishing language and suspicious indicators (unknown sender)	Sublime Security	7mo 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

510 Rules

Page 5 of 11