
opencti
Open Cyber Threat Intelligence Platform

Open Cyber Threat Intelligence Platform

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


Dockerized mail server suite with Postfix, Dovecot, Rspamd, and ClamAV. Provides secure email hosting with integrated spam filtering, antivirus, and…

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

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

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

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

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

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

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…

SQL powered operating system instrumentation, monitoring, and analytics.

Open .eml test set for evaluating how email security controls and AI mailbox assistants handle indirect prompt injection across disclosure,…

A complete guide and workflow for integrating Agile sprints with DevOps CI/CD pipelines.

Real-time cloud-native runtime security agent for Linux that monitors syscalls and container/Kubernetes metadata to detect anomalous behavior and…

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

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