Authentication and session management form the backbone of application security. Every login, password reset, multi-factor authentication (MFA) challenge, and user session relies on cryptographic mechanisms to protect sensitive information. Weak cryptographic controls allow attackers to bypass authentication, steal credentials, and gain unauthorised access. These weaknesses are collectively known as cryptographic failures, one of the most The post Cryptographic Failures in Authentication and Session Management appeared first on Kratikal Blogs.

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Cryptographic failures in authentication and session management are among the most critical web application security risks. Common mistakes include using outdated password hashing algorithms (MD5, SHA-1) instead of bcrypt/Argon2/scrypt, missing or weak salts, insecure encryption modes like ECB, hardcoded secret keys, weak or predictable session tokens, JWT misconfigurations (e.g., accepting alg:none), improper session invalidation, and IV reuse. A practical security checklist covers both authentication and session management controls, including enforcing TLS 1.3, using AES-GCM, setting cookie flags (Secure, HttpOnly, SameSite=Strict), and rotating signing keys regularly.

Cryptographic Failures in Authentication and Session Management

Why Authentication and Session Management Are So Vulnerable?

Common Cryptographic Failures in Authentication

Common Cryptographic Failures in Session Management