Security That Doesn't Compromise
Your data is encrypted client-side before it ever leaves your device. We literally cannot read your information—and that's by design.
What is Zero-Knowledge Encryption?
Zero-knowledge encryption means the service provider (us) mathematically cannot access your data. Your information is encrypted on your device using keys that only you possess—keys that never touch our servers.
This is fundamentally different from traditional encryption where the company holds the keys. Even if we wanted to, even if compelled by law enforcement, we cannot decrypt your personal data.
// Your device encrypts data locally const key = deriveKey(masterPassword); // We only see encrypted blobs const encrypted = encrypt(yourData, key); // Even our servers only store: // "aGVsbG8gd29ybGQ..." // We CANNOT decrypt without your key // decrypt(encrypted, ???) // Impossible
Security at Every Layer
From encryption algorithms to infrastructure, security is built into every aspect of ContextX.
AES-256-GCM Encryption
Military-grade encryption for all data at rest. The same standard used by governments and financial institutions.
TLS 1.3 in Transit
All data transmitted using the latest TLS protocol with perfect forward secrecy.
PBKDF2 Key Derivation
100,000 iterations with SHA-256 to derive encryption keys. Resistant to brute force attacks.
No Backdoors
We cannot access your data even if compelled. There are no master keys, no bypasses.
Audit Logs
Complete visibility into who accessed your data and when. Every query is logged.
Secure Deletion
When you delete data, it's cryptographically erased. No recovery possible.
Compliance & Certifications
We meet and exceed industry standards for data protection.
EU General Data Protection Regulation compliant
California Consumer Privacy Act compliant
Type II certification in progress
Information security management
Account Recovery
Important: Save Your Recovery Phrase
Because we cannot access your encryption keys, if you lose your recovery phrase, we cannot help you recover your data. This is the trade-off of true zero-knowledge security. When you create your account, you'll receive a 24-word recovery phrase. Store it securely—it's your only backup.
Security Research
We welcome responsible security research. If you discover a vulnerability, please report it to our security team.
Report a Vulnerability