Web Security Best Practices

Following security best practices helps protect your application and users from common threats.

Transport Security

**Always use HTTPS**: Encrypt all data in transit

**Implement HSTS**: Force HTTPS connections

**Use strong TLS versions**: TLS 1.2 minimum, TLS 1.3 preferred

**Configure secure cipher suites**: Avoid weak ciphers

Application Security

**Implement CSP**: Content Security Policy prevents XSS

**Validate all input**: Never trust user input

**Use parameterized queries**: Prevent SQL injection

**Sanitize output**: Escape user-generated content

Authentication & Authorization

**Use strong passwords**: Enforce complexity requirements

**Implement rate limiting**: Prevent brute force attacks

**Use secure session management**: Proper session handling

**Implement 2FA**: Two-factor authentication

Data Protection

**Encrypt sensitive data**: At rest and in transit

**Use secure cookies**: HttpOnly, Secure, SameSite

**Minimize data collection**: Collect only what you need

**Implement data retention policies**: Delete old data

Monitoring & Response

**Log security events**: Monitor for suspicious activity

**Set up alerts**: Get notified of issues

**Have an incident response plan**: Know what to do

**Regular security audits**: Review and improve

Compliance

**Follow OWASP Top 10**: Common vulnerabilities

**Consider GDPR**: Data privacy regulations

**Implement security.txt**: Security contact information

**Regular penetration testing**: Find vulnerabilities

Tools & Resources

Security scanning tools

Dependency vulnerability scanners

Security headers analyzers

SSL/TLS configuration testers

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Web Security Best Practices