TLS 1.3

Developers struggle to configure SSL/TLS securely, with many systems defaulting to insecure protocols (SSLv3, TLS 1.0/1.1) and weak cipher suites (RC4) that remain enabled despite known vulnerabilities. Balancing security best practices against legacy client compatibility requires expertise and continuous vigilance.

TLS protocol design is inherently obscure and complicated, making it difficult to audit and easy to introduce bugs. Issues include missing perfect forward secrecy in many TLS 1.2 ciphersuites, client-only authentication by default, and data leakage about session status and party identity.