Security Testing

Web Application Security Best Practices

Lucid8 Auditing UnitJul 29, 20268 min read

A practical guide to securing user inputs, managing credentials, and auditing web application setups.

Securing Public Input Fields

User-facing forms and API endpoints are common targets for web application attacks. Without validation, inputs can be exploited to run SQL injection or Cross-Site Scripting (XSS) scripts.

All application inputs must be validated and sanitized on the server. Developers should use parameterized queries and secure ORM systems to prevent database exploits.

Best Practices for Token and Session Security

Weak session management can allow attackers to hijack accounts. We recommend implementing three key measures to secure session tokens:

  • Configure cookies with Secure, HttpOnly, and SameSite attributes to block access from script tools.
  • Set short expiration times on authentication tokens and use secure refresh tokens to renew access.
  • Store session keys using platform-native secure storage or encrypted database systems.

Implementing Security Headers

Configuring HTTP security headers (such as Content Security Policy) restricts the sources from which a browser can load scripts, protecting users from unauthorized script injection.

Regular vulnerability scans and API reviews help teams identify and patch security risks before they can be exploited.

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