add karmada security audit blog

Signed-off-by: zhzhuang-zju <[email protected]>

blog/2025-01-17-karmada-security-audit/karmada-security-audit.md

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+# Announcing the results of the Karmada security audit
+
+Community post cross-posted on the [OSTIF blog](https://ostif.org/karmada-audit-complete/) and [CNCF blog](https://www.cncf.io/blog/2025/01/16/announcing-the-results-of-the-karmada-security-audit/)
+
+[OSTIF](https://ostif.org/) is proud to share the results of our security audit of Karmada. Karmada is an open source Kubernetes orchestration 
+system for running cloud-native applications seamlessly across different clouds and clusters. With the help of [Shielder](https://www.shielder.com/) and 
+the [Cloud Native Computing Foundation (CNCF)](https://www.cncf.io/), this project offers users improved open, multi-cloud, multi-cluster Kubernetes management.
+
+## Audit Process:
+
+While Karmada is a part of the Kubernetes ecosystem and therefore utilizes Kubernetes libraries and implementations, the focus 
+of this particular work was on the overall security health of the custom implementations of Karmada and its third party dependencies. 
+Karmada’s function utilizes multiple components, CLI tools, and add ons to extend the standard Kubernetes features, which can be 
+customized from deployment to deployment. This makes Karmada’s attack scenarios complex, so it was necessary to perform a scoped 
+threat modelling in order to evaluate potential attack surfaces. Utilizing this custom threat model and a combination of manual, 
+tooling, and dynamic review, Shielder identified six findings with security impact on the project. 
+
+## Audit Results:
+
+- 6 Findings
+  - 1 High, 1 Medium, 2 Low, 2 Informational
+- Recommendations for Future Efforts
+- Proposal for Long-term Improvements to Overall Security
+
+The Karmada maintainer team worked quickly and in tandem with Shielder to resolve and fix the reported issues. Their work on behalf of 
+the project was meticulous and mindful of users as well as relevant third-party dependencies and projects. They published necessary 
+advisories and alerted users as to the impact and resolution of this audit. OSTIF wishes them the best of luck on their journey to 
+graduated status with the CNCF.
+
+**Thank you** to the individuals and groups that made this engagement possible:
+
+- Karmada maintainers and community: especially Hongcai Ren, Kevin Wang, and Zhuang Zhang
+- Shielder: Abdel Adim “Smaury” Oisfi, Pietro Tirenna, Davide Silvetti
+- The Cloud Native Computing Foundation