blog: External audit summary (#2919)

* blog: External audit summary

Signed-off-by: Stewart X Addison <sxa@redhat.com>

content/blog/external_audit/index.md

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+---
+title: External audit of Temurin build and distribution processes
+date: "2024-06-17T17:00:00+00:00"
+author: pmc
+description:
+tags:
+  - temurin
+  - security
+---
+## Introduction
+
+Last year, the Eclipse Foundation engaged the
+[Open Source Technology Improvement Fund](https://ostif.org/) to
+perform an independent audit of the build and distribution processes for
+Eclipse Temurin. This was done by the cybersecurity research and consulting
+firm [Trail of Bits](https://www.trailofbits.com/).
+
+## Motivation
+
+The work done as part of this audit is consistent with other
+[software supply-chain security work](https://adoptium.net/docs/slsa/) which
+the Adoptium team are already doing with Temurin, such as the work to
+attain
+[SLSA build level 3 compliance](https://adoptium.net/blog/2024/01/slsabuild3-temurin/)
+as well as other work to
+[harden the security](https://adoptium.net/docs/secure-software/) of parts of the project, so it
+was a natural next step to have an external team look at our build and
+distribution processes to identify areas for improvement.
+
+## Semgrep static analysis
+
+As part of this collaboration with Trail of Bits we have also implemented
+the open-source static analysis tool
+[Semgrep](https://github.com/adoptium/infrastructure/issues/3371#issuecomment-1976959833)
+in our repositories as an additional automated check on each PR to ensure
+that the types of findings from the audit are identified before being merged
+into our codebase if they occur in the future.
+
+## Status of the audit
+
+The audit and subsequent remediation work from it are now complete. The
+[report from Trail of bits](https://ostif.org/wp-content/uploads/2024/06/Temurin-Final-Report.pdf)
+is now available, and a document with our
+[response and list of remediation actions](https://adoptium.net/pdf/temurin-audit-response.pdf) is also available.
+
+## Conclusion
+
+This has been a very productive collaboration for the Adoptium team. Thanks go to the OpenSSF’s
+Alpha-Omega project that provided funding to help Adoptium and other Eclipse Foundation projects
+improve their security, the Foundation itself for providing this opportunity to Adoptium, and the
+Adoptium project members that worked on achieving the resolutions.
+
+An exercise such as this could be very useful for other projects out there.
+A list of others that Trail of Bits have been involved with can be seen on
+[their publication page](https://github.com/trailofbits/publications).