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

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Mass campaign: recipient address in subject, body, and link (untrusted sender)	Sublime Security	1mo 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	7mo 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	1mo 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	1mo 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 Jan 27th, 2026	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	7mo 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	1mo 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
Request for Quote or Purchase (RFQ\|RFP) with suspicious sender or recipient pattern	Sublime Security	13h ago Mar 9th, 2026	BEC/Fraud Evasion Free email provider Content analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/request-for-quote-or-purchase-rfqorrfp-with-suspicious-sender-or-recipient-pattern-2ac0d329
Salesforce infrastructure abuse	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering Content analysis Header analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/salesforce-infrastructure-abuse-78a77c70
Scam: Piano giveaway	Sublime Security	2mo ago Dec 11th, 2025	BEC/Fraud Free email provider Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/scam-piano-giveaway-1a91a203
Service abuse: Apple TestFlight with suspicious developer reference	Sublime Security	1mo ago Feb 6th, 2026	Spam Social engineering Content analysis HTML analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/service-abuse-apple-testflight-with-suspicious-developer-reference-e7ea0ee0
Service abuse: AppSheet infrastructure with suspicious indicators	Sublime Security	5mo ago Oct 6th, 2025	Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding URL analysis Whois	/feeds/core/detection-rules/service-abuse-appsheet-infrastructure-with-suspicious-indicators-5937646a
Service Abuse: Box file sharing with credential phishing intent	Sublime Security	1mo 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	/feeds/core/detection-rules/service-abuse-box-file-sharing-with-credential-phishing-intent-5bd0cb25
Service abuse: Cisco secure email service with financial request	Sublime Security	5mo ago Oct 1st, 2025	BEC/Fraud Impersonation: Brand Social engineering Evasion Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/service-abuse-cisco-secure-email-service-with-financial-request-43a6daa8
Service abuse: FlipHTML5 with attachment deception and credential theft language	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Social engineering Free file host Evasion Content analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/service-abuse-fliphtml5-with-attachment-deception-and-credential-theft-language-02464799
Service abuse: GetAccept callback scam content	Sublime Security	1mo ago Jan 16th, 2026	Callback Phishing Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/service-abuse-getaccept-callback-scam-content-7ec2f70b
Service Abuse: GoDaddy infrastructure	Sublime Security	2mo ago Jan 7th, 2026	Callback Phishing Extortion Evasion Natural Language Understanding Content analysis	/feeds/core/detection-rules/service-abuse-godaddy-infrastructure-8a2dd357
Service abuse: Microsoft Power Automate callback scam impersonation	Sublime Security	5d ago Mar 5th, 2026	Callback Phishing Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/service-abuse-microsoft-power-automate-callback-scam-impersonation-18d1c18b
Service abuse: Microsoft Power BI callback scam	Sublime Security	1mo ago Jan 22nd, 2026	Callback Phishing Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/service-abuse-microsoft-power-bi-callback-scam-7a55388e
Service abuse: Monday.com callback scam	Sublime Security	1mo ago Jan 26th, 2026	Callback Phishing Social engineering Out of band pivot Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/service-abuse-mondaycom-callback-scam-82cf4502
Service abuse: Nylas tracking subdomain with suspicious content	Sublime Security	4d ago Mar 6th, 2026	BEC/Fraud Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/service-abuse-nylas-tracking-subdomain-with-suspicious-content-a3a6c896
Service abuse: Random Google Firebase sender address with suspicious content	Sublime Security	1mo ago Jan 12th, 2026	Spam Credential Phishing Free subdomain host Social engineering Content analysis Header analysis HTML analysis Natural Language Understanding Sender analysis URL analysis Whois	/feeds/core/detection-rules/service-abuse-random-google-firebase-sender-address-with-suspicious-content-9f8899a9
Service abuse: Recruiting with suspicious language patterns from legitimate platforms	Sublime Security	5mo ago Oct 7th, 2025	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/service-abuse-recruiting-with-suspicious-language-patterns-from-legitimate-platforms-29e12696
Service abuse: Roomsy with unrelated body content	Sublime Security	3mo ago Dec 2nd, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Header analysis Sender analysis Natural Language Understanding	/feeds/core/detection-rules/service-abuse-roomsy-with-unrelated-body-content-18e08a5a
Service abuse: Sendgrid credential theft with personalized request targeting single recipient	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Social engineering Header analysis Natural Language Understanding Sender analysis Content analysis	/feeds/core/detection-rules/service-abuse-sendgrid-credential-theft-with-personalized-request-targeting-single-recipient-b9680da1
Service abuse: SendThisFile with credential theft and financial language	Sublime Security	4mo ago Oct 27th, 2025	BEC/Fraud Credential Phishing Free file host Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/service-abuse-sendthisfile-with-credential-theft-and-financial-language-c1ebf25b
Service abuse: WeTransfer callback scam	Sublime Security	1mo ago Jan 30th, 2026	Callback Phishing Social engineering Out of band pivot Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/service-abuse-wetransfer-callback-scam-c60c8650
Spam: Fake dating profile notification	Sublime Security	3mo ago Dec 3rd, 2025	Spam Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/spam-fake-dating-profile-notification-0f33fea2
Spam/fraud: Predatory journal/research paper request	Sublime Security	4mo ago Nov 3rd, 2025	BEC/Fraud Spam Social engineering Impersonation: Brand Lookalike domain Evasion Natural Language Understanding Content analysis Sender analysis URL analysis Whois	/feeds/core/detection-rules/spamfraud-predatory-journalresearch-paper-request-263ca56b
Spam: Mastercard promotional content with image-based body	Sublime Security	4mo ago Nov 5th, 2025	Credential Phishing Spam Image as content Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/spam-mastercard-promotional-content-with-image-based-body-5f2cb559
Spam: New job cold outreach from unsolicited sender	Sublime Security	5mo ago Sep 29th, 2025	Spam Content analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/spam-new-job-cold-outreach-from-unsolicited-sender-ec39b789
Spam: Sendersrv.com with financial communications and unsubscribe language	Sublime Security	14d ago Feb 24th, 2026	Spam Evasion Social engineering Header analysis Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/spam-sendersrvcom-with-financial-communications-and-unsubscribe-language-69570820
Spam: Website errors solicitation	Sublime Security	2mo ago Dec 11th, 2025	Spam Content analysis Sender analysis Natural Language Understanding	/feeds/core/detection-rules/spam-website-errors-solicitation-122ea794
Spoofable internal domain with suspicious signals	Sublime Security	7mo ago Jul 23rd, 2025	Credential Phishing Free file host Free subdomain host Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/spoofable-internal-domain-with-suspicious-signals-40089d69
Suspected lookalike domain with suspicious language	Sublime Security	1mo ago Jan 12th, 2026	BEC/Fraud Evasion Lookalike domain Social engineering Content analysis Natural Language Understanding Sender analysis Whois	/feeds/core/detection-rules/suspected-lookalike-domain-with-suspicious-language-3674ced0
Suspicious attachment with unscannable Cloudflare link	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Evasion PDF Social engineering Impersonation: Employee Impersonation: VIP File analysis URL analysis Sender analysis Content analysis Header analysis Natural Language Understanding	/feeds/core/detection-rules/suspicious-attachment-with-unscannable-cloudflare-link-00f92b6f
Suspicious invoice reference with missing or image-only attachments	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Social engineering Content analysis Computer Vision File analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/suspicious-invoice-reference-with-missing-or-image-only-attachments-466c1680
Suspicious newly registered reply-to domain with engaging financial or urgent language	Sublime Security	1mo ago Jan 12th, 2026	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis Whois	/feeds/core/detection-rules/suspicious-newly-registered-reply-to-domain-with-engaging-financial-or-urgent-language-db4d9bb3
Suspicious recipient pattern and language with low reputation link to login	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis URL screenshot	/feeds/core/detection-rules/suspicious-recipient-pattern-and-language-with-low-reputation-link-to-login-a8ea0402
Suspicious recipients pattern with NLU credential theft indicators	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Evasion Content analysis Header analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/suspicious-recipients-pattern-with-nlu-credential-theft-indicators-8e121c3e
Suspicious recipients pattern with no Compauth pass and suspicious content	Sublime Security	1mo ago Jan 12th, 2026	Content analysis Computer Vision Header analysis Natural Language Understanding URL analysis URL screenshot	/feeds/core/detection-rules/suspicious-recipients-pattern-with-no-compauth-pass-and-suspicious-content-34fb65f6
Vendor compromise: GovDelivery message with suspicious link	Sublime Security	7mo ago Aug 5th, 2025	Credential Phishing Malware/Ransomware Free subdomain host IPFS Social engineering Evasion Impersonation: Brand Natural Language Understanding URL analysis Whois	/feeds/core/detection-rules/vendor-compromise-govdelivery-message-with-suspicious-link-0d2d5172
Vendor impersonation: Thread hijacking with typosquat domain	Sublime Security	1mo ago Jan 12th, 2026	BEC/Fraud Lookalike domain Social engineering Spoofing Content analysis Natural Language Understanding Sender analysis Whois	/feeds/core/detection-rules/vendor-impersonation-thread-hijacking-with-typosquat-domain-9c2f38ed
Venmo payment request abuse	Sublime Security	6mo ago Sep 5th, 2025	Callback Phishing BEC/Fraud Social engineering Impersonation: Brand Evasion Natural Language Understanding Content analysis Sender analysis HTML analysis	/feeds/core/detection-rules/venmo-payment-request-abuse-4450639a
VIP Impersonation via Google Group relay with suspicious indicators	Sublime Security	3mo ago Nov 12th, 2025	BEC/Fraud Credential Phishing Malware/Ransomware Evasion Free email provider Impersonation: Employee Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/vip-impersonation-via-google-group-relay-with-suspicious-indicators-57f9cd3b
VIP impersonation with BEC language (near match, untrusted sender)	Sublime Security	1mo ago Jan 12th, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/vip-impersonation-with-bec-language-near-match-untrusted-sender-303081da
VIP impersonation with charitable donation fraud	Sublime Security	3mo ago Nov 12th, 2025	BEC/Fraud Impersonation: Employee Impersonation: VIP Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/vip-impersonation-with-charitable-donation-fraud-35a56b8e
VIP impersonation with invoicing request	Sublime Security	2y ago Apr 23rd, 2024	BEC/Fraud Impersonation: VIP Content analysis Header analysis Natural Language Understanding	/feeds/core/detection-rules/vip-impersonation-with-invoicing-request-a60f89a0
VIP impersonation with urgent request (strict match, untrusted sender)	Sublime Security	1mo ago Jan 12th, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/vip-impersonation-with-urgent-request-strict-match-untrusted-sender-0dd1fa60
VIP impersonation with w2 request with reply-to mismatch	Sublime Security	11d ago Feb 27th, 2026	BEC/Fraud Impersonation: VIP Content analysis Header analysis Natural Language Understanding	/feeds/core/detection-rules/vip-impersonation-with-w2-request-with-reply-to-mismatch-e7e73fad

204 Rules

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