# OpenCTI

> free software for cyber threat intelligence

**Wikidata**: [Q122757685](https://www.wikidata.org/wiki/Q122757685)  
**Source**: https://4ort.xyz/entity/opencti

## Summary
OpenCTI is a free software platform for cyber threat intelligence, designed to collect, analyze, and share structured threat information. It uses the Structured Threat Information Expression (STIX) framework and is distributed under the Apache Software License 2.0, making it accessible for organizations to manage and mitigate cybersecurity risks.

## Key Facts
- **Primary use**: Cyber threat intelligence
- **Technology**: Uses Structured Threat Information Expression (STIX)
- **License**: Apache Software License 2.0 (applies to the community edition)
- **Latest stable version**: 4.0.6 (released on 2021-01-11)
- **Source code**: Hosted on GitHub at [https://github.com/OpenCTI-Platform/opencti](https://github.com/OpenCTI-Platform/opencti)
- **Website**: [https://filigran.io/solutions/products/opencti-threat-intelligence/](https://filigran.io/solutions/products/opencti-threat-intelligence/)
- **Copyright status**: Copyrighted
- **Instance of**: Free software

## FAQs
### Q: What is OpenCTI used for?
A: OpenCTI is used for cyber threat intelligence, helping organizations collect, analyze, and share structured threat information to improve cybersecurity defenses.

### Q: Is OpenCTI free to use?
A: Yes, OpenCTI is free software distributed under the Apache Software License 2.0, allowing users to run, study, modify, and distribute it.

### Q: What technology does OpenCTI rely on?
A: OpenCTI uses the Structured Threat Information Expression (STIX) framework to standardize and share cyber threat intelligence.

### Q: Where can I find the source code for OpenCTI?
A: The source code is available on GitHub at [https://github.com/OpenCTI-Platform/opencti](https://github.com/OpenCTI-Platform/opencti).

### Q: What is the latest stable version of OpenCTI?
A: The latest stable version is 4.0.6, released on January 11, 2021.

## Why It Matters
OpenCTI plays a crucial role in the cybersecurity landscape by providing a free and open-source platform for threat intelligence. Its use of the STIX framework ensures standardized data sharing, which is essential for organizations to collaborate effectively in detecting and mitigating cyber threats. By being freely available under the Apache License 2.0, OpenCTI democratizes access to advanced threat intelligence tools, empowering both large enterprises and smaller security teams. This accessibility helps improve overall cybersecurity posture by enabling better threat detection, analysis, and response mechanisms. The platform's continuous updates and community-driven development further enhance its relevance in an ever-evolving threat landscape.

## Notable For
- **Free and open-source**: Unlike proprietary alternatives, OpenCTI is freely available under the Apache License 2.0, making it accessible to a wide range of users.
- **STIX integration**: OpenCTI leverages the Structured Threat Information Expression (STIX) framework, ensuring compatibility with industry standards for threat intelligence.
- **Community-driven development**: The project benefits from active community contributions, leading to regular updates and improvements.
- **GitHub-hosted source code**: The availability of the source code on GitHub allows for transparency and community involvement in its development.
- **Apache License 2.0**: The license ensures that OpenCTI can be freely used, modified, and distributed, fostering innovation in cybersecurity.

## Body
### Overview
OpenCTI is a free software platform designed for cyber threat intelligence. It is built to help organizations collect, analyze, and share structured threat information, improving their ability to detect and mitigate cybersecurity risks.

### Technology and Standards
OpenCTI uses the Structured Threat Information Expression (STIX) framework, which is a standardized language for cyber threat intelligence. This ensures that the data shared through OpenCTI is compatible with industry standards, facilitating better collaboration and interoperability.

### Licensing and Accessibility
OpenCTI is distributed under the Apache Software License 2.0, which allows users to freely run, study, modify, and distribute the software. This open-source model makes the platform accessible to a broad range of users, from large enterprises to smaller security teams.

### Development and Updates
The project is hosted on GitHub, where the source code is available for community contributions. This has led to regular updates and improvements, with the latest stable version being 4.0.6, released on January 11, 2021. The platform's continuous development ensures that it remains relevant and effective in an evolving threat landscape.

### Website and Documentation
For more information, users can visit the official website at [https://filigran.io/solutions/products/opencti-threat-intelligence/](https://filigran.io/solutions/products/opencti-threat-intelligence/). The platform is also well-documented, with resources available to help users get started and make the most of its features.

## References

1. [Release 3.3.0. 2020](https://github.com/OpenCTI-Platform/opencti/releases/tag/3.3.0)
2. [Release 3.3.1. 2020](https://github.com/OpenCTI-Platform/opencti/releases/tag/3.3.1)
3. [Release 3.3.2. 2020](https://github.com/OpenCTI-Platform/opencti/releases/tag/3.3.2)
4. [Release 4.0.0. 2020](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.0.0)
5. [Release 4.0.1. 2020](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.0.1)
6. [Release 4.0.2. 2020](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.0.2)
7. [Release 4.0.3. 2020](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.0.3)
8. [Release 4.0.4. 2020](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.0.4)
9. [Release 4.0.5. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.0.5)
10. [Release 4.0.6. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.0.6)
11. [Release 4.0.7. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.0.7)
12. [Release 4.1.0. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.1.0)
13. [Release 4.1.1. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.1.1)
14. [Release 4.1.2. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.1.2)
15. [Release 4.2.0. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.2.0)
16. [Release 4.2.1. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.2.1)
17. [Release 4.2.2. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.2.2)
18. [Release 4.2.3. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.2.3)
19. [Release 4.2.4. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.2.4)
20. [Release 4.3.0. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.3.0)
21. [Release 4.3.1. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.3.1)
22. [Release 4.3.2. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.3.2)
23. [Release 4.3.3. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.3.3)
24. [Release 4.3.4. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.3.4)
25. [Release 4.3.5. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.3.5)
26. [Release 4.4.0. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.4.0)
27. [Release 4.4.1. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.4.1)
28. [Release 4.5.0. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.5.0)
29. [Release 4.5.1. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.5.1)
30. [Release 4.5.2. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.5.2)
31. [Release 4.5.3. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.5.3)
32. [Release 4.5.4. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.5.4)
33. [Release 4.5.5. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/4.5.5)
34. [Release 5.0.0. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.0.0)
35. [Release 5.0.1. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.0.1)
36. [Release 5.0.2. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.0.2)
37. [Release 5.0.3. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.0.3)
38. [Release 5.1.0. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.1.0)
39. [Release 5.1.1. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.1.1)
40. [Release 5.1.2. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.1.2)
41. [Release 5.1.3. 2021](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.1.3)
42. [Release 5.1.4. 2022](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.1.4)
43. [Release 5.2.0. 2022](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.2.0)
44. [Release 5.2.1. 2022](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.2.1)
45. [Release 5.2.2. 2022](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.2.2)
46. [Release 5.2.3. 2022](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.2.3)
47. [Release 5.2.4. 2022](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.2.4)
48. [Release 5.3.0. 2022](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.3.0)
49. [Release 5.3.1. 2022](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.3.1)
50. [Release 5.3.2. 2022](https://github.com/OpenCTI-Platform/opencti/releases/tag/5.3.2)