Secure Coding Practices Guide 🔒

Here are essential secure coding practices to protect your applications from common vulnerabilities:

1. Input Validation
   Always validate and sanitize user inputs to prevent injection attacks.

   *Example: Use regex for format checks and reject unexpected data types.*

2. Avoid SQL Injection
   Use parameterized queries or ORM tools instead of concatenating user inputs into SQL commands.

   *Tip: Never trust client-side validation alone – always verify on the server.*

3. Prevent Cross-Site Scripting (XSS)
   Escape output data before rendering it in HTML.

   *Solution: Use built-in sanitization libraries for dynamic content.*

4. Implement Strong Authentication
   Enforce multi-factor authentication and securely store passwords using hashing algorithms.

   *Best Practice: Use OAuth 2.0 for third-party login integrations.*

5. Data Encryption
   Encrypt sensitive data both at rest and in transit using TLS/SSL protocols.

   *Note: Always use AES-256 for symmetric encryption in modern systems.*

For deeper insights, check our Advanced Security Topics guide. 🛡️