
rspamd
Spam filtering and email processing framework with regex rules, statistical analysis, custom Lua plugins, and external blocklists for MTA integration.

Spam filtering and email processing framework with regex rules, statistical analysis, custom Lua plugins, and external blocklists for MTA integration.

Open-source email filtering framework that detects spam and phishing using content analysis, header checks, Bayesian scoring, and DNS blocklists.

Real-time malicious traffic detection system using public blacklists, static malware trails, and heuristic analysis to identify threats across DNS,…

Open Cyber Threat Intelligence Platform

Sublime rules for email attack detection, prevention, and threat hunting.

Tuning and refactoring Google Chronicle Curated Detections to eliminate alert fatigue and fix logic gaps/bugs.

Open-source network IDS/IPS/NSM engine for real-time traffic inspection, intrusion detection and prevention, protocol analysis, and rule-based threat…

Open-source XDR and SIEM platform for threat detection, log analysis, file integrity monitoring, vulnerability assessment, and compliance management…

Zeek is a powerful network analysis framework that is much different from the typical IDS you may know.

Paperweight scans your inbox to map your digital footprint, then helps you take back control and delete your data. Local-first and open source.

MISP (core software) - Open Source Threat Intelligence and Sharing Platform

Automation to assess the state of your M365 tenant against CISA's baselines

mboxShell. Fast terminal viewer for MBOX files of any size. Open, search and export emails from Gmail Takeout backups (50GB+) without loading them…

A Python package and CLI for parsing aggregate and forensic DMARC reports

🦄 A curated list of privacy & security-focused software and services


Python proof-of-concept for testing SMTP command injection (CVE-2026-73570) by sending malformed RCPT TO addresses to detect shell command…

Scalable threat intelligence platform that enriches observables and files using 200+ analyzers, with built-in GUI, REST API, and automated workflows…