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
Fake message thread with a suspicious link and engaging language from an unknown sender	Sublime Security	2mo ago Nov 12th, 2025	Credential Phishing Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/fake-message-thread-with-a-suspicious-link-and-engaging-language-from-an-unknown-sender-8fd0e211
Fake request for tax preparation	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Malware/Ransomware Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/fake-request-for-tax-preparation-e36b85b3
Fake shipping notification with suspicious language	Sublime Security	2y ago May 3rd, 2024	Credential Phishing Spam Evasion Content analysis Natural Language Understanding	/feeds/core/detection-rules/fake-shipping-notification-with-suspicious-language-67748b0a
Fake thread with suspicious indicators	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Credential Phishing Spam Evasion Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/fake-thread-with-suspicious-indicators-c2e18a57
Fake voicemail notification (untrusted sender)	Sublime Security	1d ago Jan 22nd, 2026	Credential Phishing Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/fake-voicemail-notification-untrusted-sender-74ba7787
Fake Zoom meeting invite with suspicious link	Sublime Security	1mo ago Dec 1st, 2025	Credential Phishing Impersonation: Brand Evasion Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/fake-zoom-meeting-invite-with-suspicious-link-aba95f23
Fraudulent order confirmation/shipping notification from Chinese sender domain	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Social engineering Content analysis Natural Language Understanding Sender analysis Whois	/feeds/core/detection-rules/fraudulent-order-confirmationshipping-notification-from-chinese-sender-domain-4392a14e
Free subdomain link with credential theft indicators	Sublime Security	2y ago Dec 12th, 2024	Credential Phishing Free subdomain host Content analysis Header analysis Natural Language Understanding Optical Character Recognition URL analysis URL screenshot	/feeds/core/detection-rules/free-subdomain-link-with-credential-theft-indicators-9187479c
Google Accelerated Mobile Pages (AMP) abuse	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Impersonation: Brand Open redirect Computer Vision Content analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis URL screenshot	/feeds/core/detection-rules/google-accelerated-mobile-pages-amp-abuse-46907029
Google Drive abuse: Credential phishing link	Sublime Security	2y ago Jul 31st, 2024	Credential Phishing Free file host Impersonation: Brand Computer Vision Natural Language Understanding Optical Character Recognition Sender analysis URL analysis URL screenshot	/feeds/core/detection-rules/google-drive-abuse-credential-phishing-link-c74aece0
Headers: System account impersonation with empty sender address	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Credential Phishing Impersonation: Employee Social engineering Spoofing Header analysis Sender analysis Natural Language Understanding	/feeds/core/detection-rules/headers-system-account-impersonation-with-empty-sender-address-887f7953
Honorific greeting BEC attempt with sender and reply-to mismatch	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/honorific-greeting-bec-attempt-with-sender-and-reply-to-mismatch-aa41b1b7
HR impersonation via e-sign agreement comment	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Credential Phishing Evasion Impersonation: Brand Out of band pivot Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/hr-impersonation-via-e-sign-agreement-comment-796c6f0f
Impersonation: Human Resources with link or attachment and engaging language	Sublime Security	6mo ago Jul 16th, 2025	BEC/Fraud Credential Phishing Impersonation: Employee Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/impersonation-human-resources-with-link-or-attachment-and-engaging-language-8c95a6a8
Impersonation: Internal corporate services	Sublime Security	3d ago Jan 20th, 2026	Credential Phishing Impersonation: Employee Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/impersonation-internal-corporate-services-3cd04f33
Impersonation: Salesforce fake campaign failure notification	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/impersonation-salesforce-fake-campaign-failure-notification-d66000ca
Impersonation: Suspected supplier impersonation with suspicious content	Sublime Security	11mo ago Feb 3rd, 2025	BEC/Fraud Evasion Free email provider Lookalike domain Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis Whois	/feeds/core/detection-rules/impersonation-suspected-supplier-impersonation-with-suspicious-content-63d8b1ce
Issuu document with suspicious embedded link	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Social engineering Free file host Evasion URL analysis URL screenshot Natural Language Understanding Optical Character Recognition	/feeds/core/detection-rules/issuu-document-with-suspicious-embedded-link-0d73f43d
Job scam (unsolicited sender)	Sublime Security	2mo ago Nov 3rd, 2025	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/job-scam-unsolicited-sender-a37dc32d
Job scam with specific salary pattern	Sublime Security	2d ago Jan 21st, 2026	BEC/Fraud Social engineering Content analysis Natural Language Understanding Header analysis Sender analysis	/feeds/core/detection-rules/job-scam-with-specific-salary-pattern-af7f9e21
Link: Adobe share with suspicious indicators	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Free file host Content analysis URL screenshot Sender analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/link-adobe-share-with-suspicious-indicators-b33cae80
Link: chatbot.page platform abuse	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Social engineering Out of band pivot URL analysis Natural Language Understanding Content analysis HTML analysis Javascript analysis URL screenshot	/feeds/core/detection-rules/link-chatbotpage-platform-abuse-bfd6a076
Link: Credential phishing traversing Russian infrastructure	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Social engineering Content analysis Header analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/link-credential-phishing-traversing-russian-infrastructure-a5203e3b
Link: Cryptocurrency fraud with suspicious links	Sublime Security	1mo 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	/feeds/core/detection-rules/link-cryptocurrency-fraud-with-suspicious-links-d0da37ce
Link: Display text matches subject line	Sublime Security	2mo ago Nov 14th, 2025	BEC/Fraud Credential Phishing Social engineering Evasion Header analysis Content analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/link-display-text-matches-subject-line-ba722cf0
Link: Executable file download with suspicious message content	Sublime Security	3mo ago Oct 16th, 2025	Credential Phishing Malware/Ransomware Evasion Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis Header analysis	/feeds/core/detection-rules/link-executable-file-download-with-suspicious-message-content-ce9a4926
Link: Figma design deck with credential theft language	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Evasion Free file host Social engineering Natural Language Understanding Computer Vision Optical Character Recognition URL analysis URL screenshot Sender analysis	/feeds/core/detection-rules/link-figma-design-deck-with-credential-theft-language-87601924
Link: File sharing impersonation with suspicious language and sending patterns	Sublime Security	2mo ago Oct 31st, 2025	BEC/Fraud Credential Phishing Social engineering Free subdomain host Impersonation: Brand Natural Language Understanding URL analysis Sender analysis Header analysis Content analysis	/feeds/core/detection-rules/link-file-sharing-impersonation-with-suspicious-language-and-sending-patterns-d3363041
Link: File sharing pretext with suspicious body and link	Sublime Security	3mo ago Oct 10th, 2025	Credential Phishing Social engineering Evasion Natural Language Understanding Content analysis URL analysis HTML analysis	/feeds/core/detection-rules/link-file-sharing-pretext-with-suspicious-body-and-link-c5718a8e
Link: Free file hosting with undisclosed recipients	Sublime Security	4mo ago Sep 11th, 2025	Credential Phishing Malware/Ransomware Free file host Free subdomain host Evasion Header analysis URL analysis Sender analysis Natural Language Understanding	/feeds/core/detection-rules/link-free-file-hosting-with-undisclosed-recipients-b6281306
Link: HR impersonation with suspicious domain indicators and credential theft	Sublime Security	1mo ago Dec 3rd, 2025	Credential Phishing Impersonation: Employee Social engineering Lookalike domain Content analysis Natural Language Understanding Computer Vision URL analysis URL screenshot	/feeds/core/detection-rules/link-hr-impersonation-with-suspicious-domain-indicators-and-credential-theft-f31f8831
Link: Intuit link abuse with file share context	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering URL analysis Natural Language Understanding Content analysis Header analysis	/feeds/core/detection-rules/link-intuit-link-abuse-with-file-share-context-cd15cc34
Link: Microsoft Dynamics 365 form phishing	Sublime Security	1mo ago Dec 5th, 2025	Credential Phishing Evasion Content analysis File analysis Optical Character Recognition Natural Language Understanding URL analysis URL screenshot	/feeds/core/detection-rules/link-microsoft-dynamics-365-form-phishing-f72b9085
Link: Microsoft impersonation using hosted png with suspicious link	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/link-microsoft-impersonation-using-hosted-png-with-suspicious-link-07c696d4
Link: Multistage Landing - Abused Buildin.ai	Sublime Security	4mo ago Sep 5th, 2025	Credential Phishing Free file host Social engineering URL analysis Natural Language Understanding	/feeds/core/detection-rules/link-multistage-landing-abused-buildinai-e0a79ef5
Link: Multistage landing - FreshDesk knowledge base abuse	Sublime Security	5mo ago Aug 21st, 2025	Credential Phishing Open redirect Impersonation: Brand Social engineering Content analysis Natural Language Understanding URL analysis URL screenshot	/feeds/core/detection-rules/link-multistage-landing-freshdesk-knowledge-base-abuse-edd6acf7
Link: Multistage landing - Ludus presentation	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Evasion Social engineering Impersonation: Brand Header analysis URL analysis Computer Vision URL screenshot Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/link-multistage-landing-ludus-presentation-a8b3c311
Link: Multistage landing - Published Google Doc	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Free file host Social engineering Natural Language Understanding URL analysis Whois	/feeds/core/detection-rules/link-multistage-landing-published-google-doc-031e1ff8
Link: Multistage landing - Scribd document	Sublime Security	11d ago Jan 12th, 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	/feeds/core/detection-rules/link-multistage-landing-scribd-document-afa9807d
Link: MyActiveCampaign Link Abuse	Sublime Security	5mo ago Aug 20th, 2025	Credential Phishing Social engineering Natural Language Understanding URL analysis Sender analysis	/feeds/core/detection-rules/link-myactivecampaign-link-abuse-f5b91ce5
Link: Personal SharePoint with invalid recipients and credential theft language	Sublime Security	5h ago Jan 23rd, 2026	Credential Phishing Social engineering Content analysis Header analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/link-personal-sharepoint-with-invalid-recipients-and-credential-theft-language-79d5403d
Link: QR Code with suspicious language (untrusted sender)	Sublime Security	5mo ago Jul 30th, 2025	Credential Phishing Impersonation: Brand QR code Social engineering Content analysis Computer Vision Natural Language Understanding QR code analysis Sender analysis URL analysis	/feeds/core/detection-rules/link-qr-code-with-suspicious-language-untrusted-sender-25a84d1c
Link: Self-sender with sender org in subject and credential theft indicator	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Social engineering Evasion Natural Language Understanding Content analysis Sender analysis URL analysis Header analysis	/feeds/core/detection-rules/link-self-sender-with-sender-org-in-subject-and-credential-theft-indicator-bfa9aa08
Mass campaign: recipient address in subject, body, and link (untrusted sender)	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Social engineering Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/mass-campaign-recipient-address-in-subject-body-and-link-untrusted-sender-599dabf5
Mismatched links: Free file share with urgent language	Sublime Security	5mo 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	/feeds/core/detection-rules/mismatched-links-free-file-share-with-urgent-language-478334c8
Open Redirect: Google domain with /url path and suspicious indicators	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Open redirect Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis	/feeds/core/detection-rules/open-redirect-google-domain-with-url-path-and-suspicious-indicators-fc5adf74
QR Code with suspicious indicators	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing QR code Social engineering Content analysis Header analysis Computer Vision Natural Language Understanding QR code analysis Sender analysis URL analysis	/feeds/core/detection-rules/qr-code-with-suspicious-indicators-04f5c34f
Reconnaissance: Short generic greeting message	Sublime Security	1mo ago Dec 2nd, 2025	BEC/Fraud Callback Phishing Social engineering Free email provider Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/reconnaissance-short-generic-greeting-message-c67dedab
Recruitee Infrastructure Abuse	Sublime Security	6mo ago Jul 16th, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis Whois	/feeds/core/detection-rules/recruitee-infrastructure-abuse-31cab83d
Request for Quote or Purchase (RFQ\|RFP) with HTML smuggling attachment	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Content analysis File analysis HTML analysis Javascript analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/request-for-quote-or-purchase-rfqorrfp-with-html-smuggling-attachment-a47a5755

190 Rules

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