Cryptographic protection via TLS 1.3 (Transport Layer Security latest version, eliminating older vulnerabilities), AES-256 encryption para data at rest, perfect forward secrecy assegurando session key compromise não affects previous sessions, certificate pinning preventing man-in-the-middle attacks, e HSTS (HTTP Strict Transport Security) forcing HTTPS connections eliminating downgrade attacks. Annual security audits por independent penetration testing firms (Veracode, WhiteHat Security) valida