🛡️SecurityRepoIndex
🛡️ Defensive SecuritySIEMOpen Source

Opencti

Open-source defensive tool for security professionals

4.0/ 55,000 GitHub starsPythonMIT

📋 Overview

A defensive security tool that monitors networks, detects threats, and automates response actions. Uses AI to identify anomalous behavior and reduce false positives in security alerts. The tool analyzes network traffic, endpoint activity, and user behavior to detect indicators of compromise. Automated response actions contain threats while preserving evidence for investigation. Integration with SIEM platforms and SOAR tools enables coordinated response across the security stack. The platform helps security teams reduce alert fatigue, improve detection accuracy, and respond to incidents faster. A solid defensive tool worth evaluating for your stack.

✨ Key Features

  • Real-time threat detection
  • Behavioral analysis
  • Automated response actions
  • False positive reduction
  • SIEM integration
  • Threat intelligence correlation

🎯 The Problem It Solves

Security Engineers

🔧 How It Works

git clone https://github.com/OpenCTI-Platform/opencti

🚀 Installation & Quick Start

Installation

git clone https://github.com/OpenCTI-Platform/opencti

Quick Start

  1. Clone the Opencti repo
  2. Read the docs
  3. Run the tool

✅ Pros

  • Reduces alert fatigue
  • Automates response actions
  • Improves detection accuracy
  • Integrates with existing tools
  • Reduces response time
  • Continuous monitoring

❌ Cons

  • Requires tuning for environment
  • May miss novel threats
  • False negatives possible
  • Resource intensive

💬 Practitioner Verdict

A solid defensive tool worth evaluating for your stack.
1

Self-Hosted (Free)

Open source, MIT/Apache licensed. Run it yourself.

⭐ Star & Clone on GitHub

Free forever. Your infrastructure, your data.

📊 Specifications

Language
Python
License
MIT
Platform
Linux, macOS, Windows
Supported Models
REST API, CLI

💰 Pricing Reality

Free and open source.

👥 Community Health

Stars5,000
Forks625
Contributors100
Health Score6/10

🏷️ Tags

SIEMOpen Source