🔒 Data Security

• Secrets are encrypted on upload using AES-256-CBC with random key + IV.
• The server never stores keys – they exist only inside your unique link.
• Each link is valid once: after the first open, message & files are destroyed.
• Attachments not downloaded are deleted together with the message.
• Old data is automatically purged by a scheduled cleanup after 7 days.
• All access attempts are logged to detect misuse.