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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 208

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

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

    194 31

  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.

    413 64

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

    OpenSSF Working Group on Securing Software Repositories

    134 35

  5. tac tac Public

    Technical Advisory Council

    153 88

  6. foundation foundation Public

    OpenSSF Governance and Legal Docs

    75 20

Repositories

Showing 10 of 84 repositories
  • scorecard Public

    OpenSSF Scorecard - Security health metrics for Open Source

    ossf/scorecard's past year of commit activity
    Go 5,761 Apache-2.0 744 397 (11 issues need help) 62 Updated Oct 18, 2026
  • 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 1,792 GPL-3.0 681 154 (4 issues need help) 88 Updated Oct 17, 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 630 Apache-2.0 163 38 24 Updated Oct 17, 2026
  • glossary Public

    A reference for common terms when talking about OpenSSF and open source software security.

    ossf/glossary's past year of commit activity
    JavaScript 6 Apache-2.0 7 3 9 Updated Oct 16, 2026
  • scorecard-action Public

    Official GitHub Action for OpenSSF Scorecard.

    ossf/scorecard-action's past year of commit activity
    Go 423 Apache-2.0 91 34 2 Updated Oct 16, 2026
  • scorecard-webapp Public

    Website and API for OpenSSF Scorecard

    ossf/scorecard-webapp's past year of commit activity
    HTML 33 Apache-2.0 35 35 (7 issues need help) 23 Updated Oct 16, 2026
  • scorecard-infra Public

    OpenSSF Scorecard infrastructure

    ossf/scorecard-infra's past year of commit activity
    Go 3 Apache-2.0 4 13 8 Updated Oct 15, 2026
  • security-insights Public

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

    ossf/security-insights's past year of commit activity
    JavaScript 82 21 8 0 Updated Oct 15, 2026
  • ossf/oss-crs-actions's past year of commit activity
    Shell 5 Apache-2.0 1 0 3 Updated Oct 15, 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 1,370 MIT 236 218 17 Updated Oct 15, 2026