Security by Design.
Engineered from day one with defense-in-depth principles, enterprise encryption, and zero credential leakage to safeguard mission-critical media infrastructure.
How Your Assets Are Protected End-to-End
Hashed API Key Verification
Upload requests are authenticated against SHA-256 cryptographic hashes scoped strictly to project workspace.
Time-Limited S3 Presigned PUT
Client streams binary directly to edge storage without server memory buffers and without leaking bucket master keys.
AES-256 Storage & Global CDN
Asset is stored under AES-256 at-rest encryption, delivered via 300+ DDoS-protected Anycast edge nodes.
End-to-End Encryption (Rest & Transit)
Every binary object is encrypted using industry-standard AES-256 at rest. All communication between clients, edge points of presence, and backend services strictly enforces TLS 1.3 with HSTS.
Zero Credential Exposure (Presigned S3)
Clients stream files directly to edge object storage using short-lived (sub-15 minute) S3 presigned PUT URLs. Root storage credentials and bucket secrets never touch browser memory or client devices.
SHA-256 Cryptographic API Key Hashing
Secret API keys (cz_live_...) are securely truncated and hashed with SHA-256 prior to database storage. Plaintext keys can never be retrieved or reconstructed by anyone after creation.
Granular Multi-Tenant Project Isolation
Media assets, folder trees, and access tokens are strictly segmented per project workspace. Authorization tokens are cryptographically bounded strictly to their designated workspace scope.
Global 300+ Edge Anycast DDoS Mitigation
Media streaming is fronted by 300+ global Anycast edge nodes equipped with automated Layer 3, 4, and 7 DDoS mitigation to guarantee resilient high-availability around the clock.
Atomic Purge & Permanent Erasure Guarantee
When assets or workspaces are deleted, Cloudizero synchronously purges the physical binary from edge storage and purges corresponding relational index records. Zero orphan data remains.
Vulnerability Disclosure & Security Inquiries
We take reports from independent security researchers seriously. If you identify a potential security issue, please coordinate responsible disclosure with our engineering team.