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 Sep 9th, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
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: BlackBaud infrastructure abuse	Sublime Security	3mo ago Jun 5th, 2026	Spam Evasion Impersonation: Brand Image as content Social engineering Content analysis Header analysis
Spam: Cold outreach from Cloudflare-hosted newly registered domain	Sublime Security	24d ago Aug 17th, 2026	Spam Evasion Social engineering Whois Natural Language Understanding Content analysis
Spam: Commonly observed formatting of unauthorized free giveaways	Sublime Security	7mo ago Jan 14th, 2026	Spam Impersonation: Brand Social engineering Content analysis HTML analysis Sender analysis URL analysis
Spam: Cryptocurrency airdrop/giveaway	Sublime Security	10mo ago Oct 16th, 2025	Spam Social engineering Impersonation: Brand Content analysis
Spam: Default Microsoft Exchange Online sender domain (onmicrosoft.com)	Sublime Security	1mo ago Aug 3rd, 2026	Callback Phishing Credential Phishing Spam Free email provider Impersonation: Brand Social engineering Content analysis Sender analysis
Spam: Fake dating profile notification	Sublime Security	5mo 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	2d ago Sep 8th, 2026	Spam Evasion Social engineering Content analysis Sender analysis URL analysis Whois
Spam: Firebase password reset from suspicious sender	Sublime Security	9mo 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	10mo 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: Ghostwriting services scam with manipulative language	Sublime Security	10mo ago Oct 17th, 2025	Spam Social engineering Content analysis Sender analysis
Spamhaus: Mail transiting a DROP listed network	Sublime Security	20h ago Sep 9th, 2026	Malware/Ransomware Credential Phishing BEC/Fraud Evasion Social engineering Header analysis Sender analysis
Spamhaus: Mail transiting an ASN-DROP listed network	Sublime Security	20h ago Sep 9th, 2026	Malware/Ransomware Credential Phishing BEC/Fraud Evasion Social engineering Header analysis Sender analysis
Spam: Large financial amount mention from newly registered sender domain	Sublime Security	1mo ago Aug 3rd, 2026	BEC/Fraud Spam Social engineering Content analysis Sender analysis Whois
Spam: Mastercard promotional content with image-based body	Sublime Security	10mo 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: Personalized subject and greetings via Salesforce Marketing Cloud	Sublime Security	10mo ago Nov 3rd, 2025	Spam Social engineering Content analysis Header analysis
Spam: Sendersrv.com with financial communications and unsubscribe language	Sublime Security	6mo 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	6mo ago Mar 10th, 2026	Spam Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
Spam: Sexually explicit Google Drive share	Sublime Security	1y ago Aug 5th, 2025	Spam Social engineering Free email provider Content analysis Sender analysis
Spam: Sexually explicit Google group invitation	Sublime Security	10mo ago Nov 12th, 2025	Spam Free email provider Social engineering Content analysis Sender analysis
Spam: Sexually explicit Looker Studio report	Sublime Security	11mo ago Oct 2nd, 2025	Spam Social engineering Free email provider Content analysis Sender analysis
Spam: Single recipient duplicated in cc	Sublime Security	3mo ago Jun 5th, 2026	Spam Impersonation: Brand Social engineering Header analysis Content analysis URL analysis Sender analysis
Spam: Spoofed Outlook mailer with unsubscribe and reference ID footer	Sublime Security	20d ago Aug 21st, 2026	Spam Social engineering Spoofing Content analysis Header analysis
Spam: Suspicious toll-free phone number	Sublime Security	1mo ago Jul 27th, 2026	Spam Social engineering Content analysis
Spam: Unsolicited WordPress account creation or password reset request	Sublime Security	9mo ago Nov 24th, 2025	Spam Social engineering Header analysis Sender analysis URL analysis
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
Subject and sender display name contains matching long alphanumeric string	Sublime Security	8mo ago Jan 12th, 2026	Malware/Ransomware Credential Phishing Evasion Social engineering Content analysis Header analysis Sender analysis
Suspected lookalike domain with suspicious language	Sublime Security	8mo ago Jan 12th, 2026	BEC/Fraud Evasion Lookalike domain Social engineering Content analysis Natural Language Understanding Sender analysis Whois
Suspected WordPress abuse with cross-site scripting (XSS) indicators	Sublime Security	1y ago Aug 5th, 2025	Malware/Ransomware Credential Phishing Scripting Impersonation: Brand Social engineering Content analysis Sender analysis
Suspicious attachment with unscannable Cloudflare link	Sublime Security	8mo 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 display name: Gmail sender with engaging language	Sublime Security	6mo ago Mar 6th, 2026	BEC/Fraud Credential Phishing Social engineering Sender analysis
Suspicious DocuSign share from new domain	Sublime Security	1y ago Aug 5th, 2025	BEC/Fraud Credential Phishing Evasion Free file host Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis
Suspicious invoice reference with missing or image-only attachments	Sublime Security	8mo ago Jan 12th, 2026	Credential Phishing Social engineering Content analysis Computer Vision File analysis Natural Language Understanding Sender analysis
Suspicious link to Looker Studio (lookerstudio.google.com) from a new and unsolicited sender	Sublime Security	8mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering Content analysis Sender analysis URL analysis
Suspicious mailer received from Gmail servers	Sublime Security	1y ago Jul 16th, 2025	Callback Phishing Spam Free email provider Social engineering Header analysis
Suspicious newly registered reply-to domain with engaging financial or urgent language	Sublime Security	4mo 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	8mo 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 request for financial information	Sublime Security	2mo ago Jun 25th, 2026	BEC/Fraud Free email provider Impersonation: Employee Impersonation: VIP Social engineering Content analysis Header analysis Sender analysis
Targeting: Specific AOL address	Sublime Security	5mo ago Mar 31st, 2026	Spam Social engineering Header analysis
Tax Form: W-8BEN solicitation	Sublime Security	6mo ago Feb 23rd, 2026	BEC/Fraud Credential Phishing Social engineering Content analysis Header analysis URL analysis
Truth Social infrastructure abuse via link redirect	Sublime Security	1y ago Jul 16th, 2025	Credential Phishing Malware/Ransomware Spam Evasion Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis
Twitter infrastructure abuse via link shortener	Sublime Security	1y ago Jul 16th, 2025	Credential Phishing Malware/Ransomware Spam Evasion Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis
URL with Unicode U+2044 (⁄) or U+2215 (∕) characters	@delivr_to	30d ago Aug 11th, 2026	Credential Phishing Evasion Social engineering Content analysis URL analysis
Vendor compromise: GovDelivery message with suspicious link	Sublime Security	1y 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	8mo 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	4mo ago May 4th, 2026	Callback Phishing BEC/Fraud Social engineering Impersonation: Brand Evasion Natural Language Understanding Content analysis Sender analysis HTML analysis
VIP impersonation: Fabricated thread history with fake VIP recipients	Sublime Security	2mo ago Jul 8th, 2026	BEC/Fraud Impersonation: VIP Social engineering Evasion Spoofing Content analysis Header analysis Sender analysis
VIP impersonation: Fake forwarded indicator with VIP recipient impersonation	Sublime Security	2mo ago Jul 7th, 2026	BEC/Fraud Impersonation: VIP Social engineering Evasion Content analysis Sender analysis
VIP impersonation: Fake thread with display name match, email mismatch	Sublime Security	5mo ago Apr 3rd, 2026	BEC/Fraud Evasion Impersonation: VIP Social engineering Spoofing Content analysis Header analysis Sender analysis Whois
VIP impersonation: Fake thread with VIPs missing email metadata	Sublime Security	1mo ago Aug 11th, 2026	BEC/Fraud Impersonation: VIP Social engineering Spoofing Natural Language Understanding Header analysis Content analysis Sender analysis

764 Rules

Page 15 of 16