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
Service abuse: Coursera callback scam	Sublime Security	3mo ago Jul 21st, 2026	Callback Phishing Impersonation: Brand Lookalike domain Social engineering Sender analysis URL analysis Whois
Service abuse: Dropbox Paper with copy-paste instructions	Sublime Security	5mo ago May 7th, 2026	Credential Phishing Social engineering Free file host Evasion Content analysis URL analysis
Service abuse: EventCreate links to newly registered domains	Sublime Security	1mo ago Aug 31st, 2026	Credential Phishing Out of band pivot URL analysis Whois HTML 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: Fake loan/funding verification lure via Mailgun	Sublime Security	3mo ago Jun 29th, 2026	Credential Phishing Impersonation: Brand Evasion Social engineering Sender analysis URL analysis Content analysis
Service abuse: File sharing impersonation with external SharePoint links	Sublime Security	7mo ago Mar 9th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis URL analysis Sender 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
Service abuse: Formester with suspicious link behavior	Sublime Security	10mo ago Dec 19th, 2025	Credential Phishing BEC/Fraud Open redirect Social engineering Free file host Computer Vision Content analysis URL analysis URL screenshot
Service abuse: GitHub notification with excessive mentions and suspicious links	Sublime Security	6mo ago Apr 7th, 2026	Credential Phishing Malware/Ransomware Free file host Free subdomain host Social engineering Header analysis URL analysis Sender analysis Whois
Service abuse: Google account notification with links to free file host	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Impersonation: Brand Social engineering Free file host Header analysis URL analysis Sender analysis
Service abuse: Google application integration redirecting to suspicious hosts	Sublime Security	10mo ago Dec 17th, 2025	Credential Phishing Malware/Ransomware Evasion Free file host Free subdomain host Open redirect Header analysis Sender analysis URL analysis
Service abuse: Google Firebase sender address with suspicious content	Sublime Security	4mo ago Jun 18th, 2026	Spam Credential Phishing Free subdomain host Social engineering Content analysis Header analysis HTML analysis Natural Language Understanding Sender analysis URL analysis Whois
Service abuse: Google OAuth with suspicious redirect destination	Sublime Security	5mo ago May 27th, 2026	Credential Phishing Evasion Free file host Free subdomain host Open redirect Social engineering URL analysis Threat intelligence
Service abuse: Google Tag Manager debug cookie clearing with open redirect potential	Sublime Security	6mo ago Apr 27th, 2026	Credential Phishing Open redirect Service abuse URL analysis Content analysis
Service abuse: Linode Objects HTML file hosting	Sublime Security	4mo ago Jun 5th, 2026	Credential Phishing Malware/Ransomware Free file host Evasion URL analysis Content analysis
Service abuse: Lovable-hosted redirect to external phishing page	Sublime Security	19d ago Oct 6th, 2026	Credential Phishing Social engineering Open redirect Free subdomain host URL analysis HTML analysis Content analysis
Service abuse: Meetup.com redirect with brand impersonation	Sublime Security	6mo ago Apr 15th, 2026	Credential Phishing Open redirect Impersonation: Brand Evasion URL analysis HTML analysis Content analysis Sender analysis
Service abuse: Microsoft Forms Pro with suspicious links or QR codes	Sublime Security	3mo ago Jul 14th, 2026	Credential Phishing QR code Social engineering Impersonation: Brand URL analysis QR code analysis Sender analysis Whois Content analysis
Service abuse: Microsoft messaging with Cloudflare Turnstile-gated link	Sublime Security	2d ago Oct 23rd, 2026	Credential Phishing Evasion Social engineering URL analysis Content analysis Sender analysis
Service abuse: Mimecast URL with excessive path length	Sublime Security	6mo ago Apr 8th, 2026	Credential Phishing Malware/Ransomware Evasion Open redirect URL analysis
Service abuse: Monday.com infrastructure with phishing intent	Sublime Security	25d ago Sep 30th, 2026	Credential Phishing Evasion Social engineering QR code Content analysis File analysis Header analysis QR code analysis Sender analysis URL analysis
Service abuse: Notion free-tier account impersonating VIP	Sublime Security	2mo ago Aug 14th, 2026	Credential Phishing Impersonation: VIP Social engineering Sender analysis Header analysis URL analysis Content analysis
Service abuse: Nylas tracking subdomain with suspicious content	Sublime Security	7mo ago Mar 6th, 2026	BEC/Fraud Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding URL analysis
Service abuse: Outlook Groups with Google Sites link and evasion tag	Sublime Security	4mo ago Jun 17th, 2026	Credential Phishing Evasion Free subdomain host Social engineering Content analysis Header analysis URL analysis Sender analysis
Service abuse: Power BI shared document lure	Sublime Security	2d ago Oct 23rd, 2026	Credential Phishing Social engineering Free file host URL analysis Content analysis
Service abuse: Self-service platform redirecting to newly registered suspicious domain	Sublime Security	24d ago Oct 1st, 2026	Credential Phishing Out of band pivot Evasion URL analysis Whois HTML analysis
Service abuse: SendGrid-formatted link with actor-controlled fragment	Sublime Security	11mo ago Nov 24th, 2025	Credential Phishing Evasion Social engineering Content analysis URL analysis
Service abuse: Soundestlink.com Microsoft impersonation	Sublime Security	2mo ago Aug 17th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering URL analysis Content analysis HTML analysis
Service abuse: Square marketing with suspicious QR code	Sublime Security	5mo ago May 26th, 2026	Credential Phishing QR code Free file host Computer Vision QR code analysis Sender analysis URL analysis
Service abuse: Substack credential theft with confusable characters and branded button redirects	Sublime Security	7mo ago Mar 19th, 2026	Credential Phishing Social engineering Evasion Sender analysis HTML analysis Natural Language Understanding URL analysis
Service abuse: SurveyMonkey with suspicious outbound links	Sublime Security	3mo ago Jul 8th, 2026	Credential Phishing Social engineering Impersonation: Brand Content analysis HTML analysis Sender analysis URL analysis
Service abuse: Suspicious Datadog alert	Sublime Security	4mo ago Jun 11th, 2026	Credential Phishing Malware/Ransomware Evasion Free subdomain host Sender analysis URL analysis
Service abuse: Vimeo with external plain-text links in message	Sublime Security	7mo ago Mar 6th, 2026	Credential Phishing Impersonation: Brand Social engineering Sender analysis Content analysis URL analysis
Service abuse: Wix redirect through bulk mailer domains	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion Open redirect URL analysis Sender analysis
Sharepoint file share with suspicious recipients pattern	Sublime Security	2y ago Mar 27th, 2024	Credential Phishing Malware/Ransomware Evasion Content analysis Header analysis URL analysis
Sharepoint link likely unrelated to sender	Sublime Security	1mo ago Sep 23rd, 2026	BEC/Fraud Credential Phishing Impersonation: Employee Lookalike domain OneNote PDF Social engineering URL analysis Sender analysis Header analysis HTML analysis
Shopify infrastructure abuse	Sublime Security	2y ago Nov 13th, 2024	Credential Phishing Spam Evasion Free subdomain host Impersonation: Brand Social engineering Content analysis Header analysis URL analysis
Spam: Commonly observed formatting of unauthorized free giveaways	Sublime Security	9mo ago Jan 14th, 2026	Spam Impersonation: Brand Social engineering Content analysis HTML analysis Sender analysis URL analysis
Spam: Fake dating profile notification	Sublime Security	7mo ago Mar 20th, 2026	Spam Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Spam: Fake photo share	Sublime Security	17d ago Oct 8th, 2026	Spam Evasion Social engineering Content analysis Sender analysis URL analysis Whois
Spam: Firebase password reset from suspicious sender	Sublime Security	10mo ago Dec 2nd, 2025	Credential Phishing Spam Evasion Social engineering Header analysis Sender analysis URL analysis
Spam/fraud: Predatory journal/research paper request	Sublime Security	11mo ago Nov 3rd, 2025	BEC/Fraud Spam Social engineering Impersonation: Brand Lookalike domain Evasion Natural Language Understanding Content analysis Sender analysis URL analysis Whois
Spam: Link to blob.core.windows.net from new domain (<30d)	Sublime Security	1y ago Jul 16th, 2025	Spam Free subdomain host Header analysis URL analysis Sender analysis
Spam: New job cold outreach from unsolicited sender	Sublime Security	1y ago Sep 29th, 2025	Spam Content analysis Natural Language Understanding Sender analysis URL analysis
Spam: New link domain (<=10d) and emojis	Sublime Security	1y ago Jul 16th, 2025	Spam Free email provider Content analysis Sender analysis URL analysis Whois
Spam: Single recipient duplicated in cc	Sublime Security	4mo ago Jun 5th, 2026	Spam Impersonation: Brand Social engineering Header analysis Content analysis URL analysis Sender analysis
Spam: Unsolicited WordPress account creation or password reset request	Sublime Security	11mo ago Nov 24th, 2025	Spam Social engineering Header analysis Sender analysis URL analysis
Spam: URL shortener with short body content and emojis	Sublime Security	9mo ago Jan 12th, 2026	Spam Free email provider Content analysis Sender analysis URL analysis
Suspicious attachment with unscannable Cloudflare link	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion PDF Social engineering Impersonation: Employee Impersonation: VIP File analysis URL analysis Sender analysis Content analysis Header analysis Natural Language Understanding
Suspicious Links to Cloudflare R2 and Edge Services	Sublime Security	1mo ago Sep 23rd, 2026	BEC/Fraud Callback Phishing Credential Phishing Extortion Malware/Ransomware Spam Free file host Header analysis Sender analysis URL analysis

617 Rules

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