Ways we harden our KVM hypervisor at Google Cloud: Security in plaintext
&gt; We have built an extensive set of proprietary fuzzing tools for KVM. We also do a thorough code review looking specifically for security issues each time we adopt a new feature or version of KVM. As a result, we&#x27;ve found many vulnerabilities in KVM over the past three years. About half of our discoveries come from code review and about half come from our fuzzers.<p>Why aren&#x27;t these tools being open sourced?