Security Best Practices

Practical guidance to harden your website and reduce risk

Introduction

Follow these recommendations to reduce the likelihood of successful attacks. They cover OWASP Top 10 risks, secure development practices, and operational controls.

OWASP Top 10

A brief overview of the most common and impactful web application risks:

1. Injection

Use parameterized queries and input validation to prevent SQL, NoSQL, and command injection vulnerabilities.

2. Broken Authentication

Implement secure session management, MFA, and strong credential policies to prevent account compromise.

3. Sensitive Data Exposure

Protect data in transit and at rest with encryption and avoid leaking secrets in logs or error messages.

4. XML External Entities (XXE)

Disable external entity resolution in XML parsers and validate XML input.

5. Broken Access Control

Enforce authorization checks on the server side for every request and object access.

6. Security Misconfiguration

Harden servers, disable debug endpoints, and ensure secure defaults across environments.

7. Cross-Site Scripting (XSS)

Escape and encode output, use secure templating, and sanitize user-generated content.

8. Insecure Deserialization

Avoid deserializing untrusted data or use safe libraries and validation to mitigate risks.

9. Using Components with Known Vulnerabilities

Keep dependencies updated and scan them for known CVEs; remove unused packages.

10. Insufficient Logging & Monitoring

Enable structured logging, alerting, and retain logs for forensic analysis.

Static Application Security Testing (SAST)

Integrate SAST tools into your CI pipeline to catch security issues early in development.

SAST Benefits

  • Find vulnerabilities earlier in development
  • Analyze code paths and library usage
  • Run checks automatically in CI
  • Reduce remediation cost by fixing issues earlier
  • Help meet compliance and secure coding policies

Implementing SAST

  1. Integrate SAST into your CI pipeline
  2. Automate scans on pull requests and merges
  3. Triage findings and assign remediation
  4. Fix issues and add tests
  5. Track progress and reduce noise with tuning

General Best Practices

Serve over HTTPS

Enforce HTTPS site-wide, enable HSTS, and use modern TLS configurations.

Security Headers

Set Content-Security-Policy, X-Frame-Options, Referrer-Policy, and other appropriate headers.

Password & Auth Policies

Enforce strong password rules, use MFA, and protect session cookies.

Software Updates

Keep OS, runtimes, and libraries up to date and automate patching where possible.

Input Validation

Validate and sanitize all input; use parameterized queries and robust output encoding.

Error Handling

Avoid leaking sensitive details in error messages and log securely.

Security Testing

Perform regular dynamic testing, dependency scanning, and periodic penetration testing.

Principle of Least Privilege

Grant minimal permissions required and segment services to limit blast radius.

Conclusion

Implementing these practices reduces risk and improves your ability to detect and respond to attacks. Security is continuous — review and improve regularly.

Need help securing your site?

Our security consultants can help apply these controls and fix findings from your scans.

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