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@ossf

Open Source Security Foundation (OpenSSF)

OpenSSF is a community of software developers and security engineers who are working together to secure open source software for the greater public good.
OpenSSF Logo

OpenSSF is committed to working both upstream and with existing communities to advance open source security for all.

We foster collaboration, establish best practices, and develop innovative solutions to secure the development, maintenance, and consumption of open source software. OpenSSF is part of the nonprofit Linux Foundation.

Working Groups:

For any questions, concerns, reports, etc., please email operations@openssf.org.

Get Involved

Membership

We encourage all individual contributors to work with their employers to become members. We aim to grow an active, healthy community of contributors, reviewers, and code owners. Learn more about the requirements and responsibilities of membership in our Membership page or see current members.

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  1. wg-best-practices-os-developers wg-best-practices-os-developers Public

    The Best Practices for OSS Developers working group is dedicated to raising awareness and education of secure code best practices for open source developers.

    JavaScript 1.1k 205

  2. ai-ml-security ai-ml-security Public

    Working Group on Artificial Intelligence and Machine Learning (AI/ML) Security

    190 30

  3. wg-securing-critical-projects wg-securing-critical-projects Public archive

    Helping allocate resources to secure the critical open source projects we all depend on.

    411 62

  4. wg-securing-software-repos wg-securing-software-repos Public

    OpenSSF Working Group on Securing Software Repositories

    134 33

  5. tac tac Public

    Technical Advisory Council

    152 84

  6. foundation foundation Public

    OpenSSF Governance and Legal Docs

    75 19

Repositories

Showing 10 of 81 repositories
  • cve-bin-tool Public

    The CVE Binary Tool helps you determine if your system includes known vulnerabilities. You can scan binaries for over 350 common, vulnerable components (openssl, libpng, libxml2, expat and others), or if you know the components used, you can get a list of known vulnerabilities associated with an SBOM or a list of components and versions.

    ossf/cve-bin-tool's past year of commit activity
    Python 1,761 GPL-3.0 645 157 (3 issues need help) 79 Updated Sep 14, 2026
  • best-practices-badge Public

    🏆Open Source Security Foundation (OpenSSF) Best Practices Badge (formerly Core Infrastructure Initiative (CII) Best Practices Badge)

    ossf/best-practices-badge's past year of commit activity
    Ruby 1,361 MIT 233 215 10 Updated Sep 13, 2026
  • malicious-packages Public

    A repository of reports of malicious packages identified in Open Source package repositories, consumable via the Open Source Vulnerability (OSV) format.

    ossf/malicious-packages's past year of commit activity
    Go 607 Apache-2.0 138 33 15 Updated Sep 13, 2026
  • ossf/ossf-landscape's past year of commit activity
    33 Apache-2.0 29 0 3 Updated Sep 13, 2026
  • scorecard-infra Public

    OpenSSF Scorecard infrastructure

    ossf/scorecard-infra's past year of commit activity
    Go 2 Apache-2.0 2 13 5 Updated Sep 13, 2026
  • scorecard-visualizer Public

    Tool for visualizing the Open SSF Scorecard Api data in a human friendly way

    ossf/scorecard-visualizer's past year of commit activity
    TypeScript 21 Apache-2.0 8 1 27 Updated Sep 13, 2026
  • SIRT Public

    The OSS-SIRT SIG (Open Source Software Security Incident Response Team) is a group working within the OSSF's Vulnerability Disclosure Working Group that is focused on creating secure vulnerability management capabilities within the open source ecosystem to ensure effective coordinated vulnerability disclosure practices (CVD)

    ossf/SIRT's past year of commit activity
    10 Apache-2.0 6 0 4 Updated Sep 13, 2026
  • security-insights Public

    Machine-readable specification for the attestation of security-relevant data.

    ossf/security-insights's past year of commit activity
    Go 81 20 7 0 Updated Sep 12, 2026
  • tac Public

    Technical Advisory Council

    ossf/tac's past year of commit activity
    152 84 44 (5 issues need help) 13 Updated Sep 12, 2026
  • wg-supply-chain-integrity Public

    Our objective is to enable open source maintainers, contributors and end-users to understand and make decisions on the provenance of the code they maintain, produce and use.

    ossf/wg-supply-chain-integrity's past year of commit activity
    208 Apache-2.0 40 8 1 Updated Sep 12, 2026