> ## Documentation Index > Fetch the complete documentation index at: https://docs.phala.com/llms.txt > Use this file to discover all available pages before exploring further. # Security Audit Report > Independent third-party security audit of Phala Cloud's underlying dstack infrastructure by zkSecurity # Security Audit Report **Phala Cloud's security has been independently validated by zkSecurity**, a leading blockchain security firm. In May 2025, zkSecurity conducted a comprehensive audit of dstack, the underlying infrastructure platform that powers Phala Cloud. ## Independent Security Validation dstack underwent a comprehensive security audit by zkSecurity in May 2025, covering: * **Low-level cryptographic implementations** (RATLS, attestation protocols) * **Production image security** and hardening measures * **TEE integration** and measurement integrity * **Attack surface analysis** and privilege escalation vectors View the complete security audit results, findings, and recommendations for the underlying dstack infrastructure.