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
VIP impersonation: Fake thread with VIPs missing email metadata	Sublime Security	30d ago Aug 11th, 2026	BEC/Fraud Impersonation: VIP Social engineering Spoofing Natural Language Understanding Header analysis Content analysis Sender analysis
VIP Impersonation via Google Group relay with suspicious indicators	Sublime Security	1mo ago Aug 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 handoff with fake forwarded invoice thread	Sublime Security	24d ago Aug 17th, 2026	BEC/Fraud Impersonation: VIP Social engineering Spoofing Out of band pivot Header analysis Content analysis URL analysis Sender analysis
VIP impersonation: VIP name within a delimited subject with fake previous threads	Sublime Security	2mo ago Jul 8th, 2026	BEC/Fraud Impersonation: VIP Social engineering Spoofing Content analysis Sender analysis Header analysis
VIP local_part impersonation from unsolicited sender	Sublime Security	1mo ago Jul 29th, 2026	Impersonation: VIP Spoofing Header analysis Sender analysis

55 Rules

Page 2 of 2