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 Jul 25th, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Service abuse: Cisco secure email service with financial request	Sublime Security	9mo ago Oct 1st, 2025	BEC/Fraud Impersonation: Brand Social engineering Evasion Content analysis Header analysis Natural Language Understanding Sender analysis
Service abuse: Elastic alerts extortion	Sublime Security	2mo ago May 21st, 2026	Extortion Impersonation: Brand Social engineering Natural Language Understanding Sender analysis
Service abuse: Facebook mail notification callback scam	Sublime Security	17d ago Jul 9th, 2026	Callback Phishing Impersonation: Brand Social engineering Spoofing Sender analysis Natural Language Understanding
Service abuse: FileMail callback scam	Sublime Security	2d ago Jul 24th, 2026	Callback Phishing Social engineering Free file host Out of band pivot Natural Language Understanding Sender analysis Content analysis
Service abuse: FlipHTML5 with attachment deception and credential theft language	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Social engineering Free file host Evasion Content analysis Natural Language Understanding URL analysis
Service abuse: GetAccept callback scam content	Sublime Security	6mo ago Jan 16th, 2026	Callback Phishing Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis
Service Abuse: GoDaddy infrastructure	Sublime Security	6mo ago Jan 7th, 2026	Callback Phishing Extortion Evasion Natural Language Understanding Content analysis
Service abuse: Google Calendar notification with callback scam language	Sublime Security	2mo ago Apr 28th, 2026	Callback Phishing ICS Phishing Out of band pivot Social engineering Natural Language Understanding Content analysis Sender analysis
Service abuse: Google Firebase sender address with suspicious content	Sublime Security	1mo 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 Groups callback scam	Sublime Security	1mo ago Jun 4th, 2026	Callback Phishing Free email provider Social engineering Natural Language Understanding Sender analysis
Service abuse: IBM IAM account notification with callback scam indicators	Sublime Security	1mo ago Jun 16th, 2026	Callback Phishing Impersonation: Brand Social engineering Out of band pivot Sender analysis Content analysis Natural Language Understanding
Service abuse: Microsoft Power Apps callback scam	Sublime Security	3mo ago Mar 30th, 2026	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis
Service abuse: Microsoft Power Automate callback scam impersonation	Sublime Security	4mo ago Mar 5th, 2026	Callback Phishing Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis
Service abuse: Microsoft Power BI callback scam	Sublime Security	6mo ago Jan 22nd, 2026	Callback Phishing Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis
Service abuse: Monday.com callback scam	Sublime Security	6mo ago Jan 26th, 2026	Callback Phishing Social engineering Out of band pivot Content analysis Natural Language Understanding Sender analysis
Service abuse: MongoDB Atlas callback scam	Sublime Security	2mo ago Apr 28th, 2026	Callback Phishing Impersonation: Brand Social engineering Natural Language Understanding Sender analysis
Service abuse: Nylas tracking subdomain with suspicious content	Sublime Security	4mo ago Mar 6th, 2026	BEC/Fraud Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding URL analysis
Service abuse: Oracle Cloud Workflow callback scam	Sublime Security	16d ago Jul 10th, 2026	Callback Phishing Social engineering Impersonation: Brand Sender analysis HTML analysis Natural Language Understanding
Service abuse: PayPal manager account creation with callback scam indicators	Sublime Security	1mo ago Jun 2nd, 2026	Callback Phishing Credential Phishing Impersonation: Brand Social engineering Spoofing Sender analysis Content analysis Natural Language Understanding
Service abuse: Recruiting with suspicious language patterns from legitimate platforms	Sublime Security	9mo ago Oct 7th, 2025	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Service abuse: Roomsy with unrelated body content	Sublime Security	7mo ago Dec 2nd, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Header analysis Sender analysis Natural Language Understanding
Service abuse: Sendgrid credential theft with personalized request targeting single recipient	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Social engineering Header analysis Natural Language Understanding Sender analysis Content analysis
Service abuse: SendThisFile with credential theft and financial language	Sublime Security	9mo ago Oct 27th, 2025	BEC/Fraud Credential Phishing Free file host Social engineering Content analysis Natural Language Understanding Sender analysis
Service abuse: Settime.io sender with callback scam intent	Sublime Security	1mo ago Jun 24th, 2026	Callback Phishing Social engineering Out of band pivot Sender analysis Natural Language Understanding
Service abuse: Substack credential theft with confusable characters and branded button redirects	Sublime Security	4mo ago Mar 19th, 2026	Credential Phishing Social engineering Evasion Sender analysis HTML analysis Natural Language Understanding URL analysis
Service abuse: WeTransfer callback scam	Sublime Security	5mo ago Jan 30th, 2026	Callback Phishing Social engineering Out of band pivot Content analysis Natural Language Understanding Sender analysis
Service abuse: Zohodesk reply-to mismatch with job scam indicators	Sublime Security	4d ago Jul 22nd, 2026	BEC/Fraud Spam Social engineering Out of band pivot Spoofing Header analysis Sender analysis Natural Language Understanding
Spam: Fake dating profile notification	Sublime Security	4mo ago Mar 20th, 2026	Spam Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis
Spam/fraud: Predatory journal/research paper request	Sublime Security	8mo 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: Mastercard promotional content with image-based body	Sublime Security	8mo 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
Spam: New job cold outreach from unsolicited sender	Sublime Security	9mo ago Sep 29th, 2025	Spam Content analysis Natural Language Understanding Sender analysis URL analysis
Spam: Sendersrv.com with financial communications and unsubscribe language	Sublime Security	5mo ago Feb 24th, 2026	Spam Evasion Social engineering Header analysis Content analysis Natural Language Understanding Sender analysis
Spam: Sexually explicit content with emoji in subject from freemail provider	Sublime Security	4mo ago Mar 10th, 2026	Spam Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Spam: Website errors solicitation	Sublime Security	20d ago Jul 6th, 2026	Spam Content analysis Sender analysis Natural Language Understanding
Spoofable internal domain with suspicious signals	Sublime Security	1y ago Jul 23rd, 2025	Credential Phishing Free file host Free subdomain host Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis
Suspected lookalike domain with suspicious language	Sublime Security	6mo ago Jan 12th, 2026	BEC/Fraud Evasion Lookalike domain Social engineering Content analysis Natural Language Understanding Sender analysis Whois
Suspicious attachment with unscannable Cloudflare link	Sublime Security	6mo 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
Suspicious invoice reference with missing or image-only attachments	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Social engineering Content analysis Computer Vision File analysis Natural Language Understanding Sender analysis
Suspicious newly registered reply-to domain with engaging financial or urgent language	Sublime Security	2mo ago May 6th, 2026	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis Whois
Suspicious recipient pattern and language with low reputation link to login	Sublime Security	6mo 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
Suspicious recipients pattern with NLU credential theft indicators	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Evasion Content analysis Header analysis Natural Language Understanding URL analysis
Suspicious recipients pattern with no Compauth pass and suspicious content	Sublime Security	6mo ago Jan 12th, 2026	Content analysis Computer Vision Header analysis Natural Language Understanding URL analysis URL screenshot
Vendor compromise: GovDelivery message with suspicious link	Sublime Security	11mo ago Aug 5th, 2025	Credential Phishing Malware/Ransomware Free subdomain host IPFS Social engineering Evasion Impersonation: Brand Natural Language Understanding URL analysis Whois
Vendor impersonation: Thread hijacking with typosquat domain	Sublime Security	6mo ago Jan 12th, 2026	BEC/Fraud Lookalike domain Social engineering Spoofing Content analysis Natural Language Understanding Sender analysis Whois
Venmo payment request abuse	Sublime Security	2mo ago May 4th, 2026	Callback Phishing BEC/Fraud Social engineering Impersonation: Brand Evasion Natural Language Understanding Content analysis Sender analysis HTML analysis
VIP impersonation: Fake thread with VIPs missing email metadata	Sublime Security	13d ago Jul 13th, 2026	BEC/Fraud Impersonation: VIP Social engineering Spoofing Natural Language Understanding Header analysis Content analysis Sender analysis
VIP impersonation: Payment handoff with VIP display name authored fake threads	Sublime Security	13d ago Jul 13th, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Natural Language Understanding Sender analysis Header analysis
VIP Impersonation via Google Group relay with suspicious indicators	Sublime Security	1mo ago Jun 5th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Evasion Free email provider Impersonation: Employee Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis
VIP impersonation: VIP payment redirect handoff via fake threads	Sublime Security	13d ago Jul 13th, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Natural Language Understanding Sender analysis Header analysis
VIP impersonation with BEC language (near match, untrusted sender)	Sublime Security	4mo ago Mar 25th, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Natural Language Understanding Sender analysis

258 Rules

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