SDLC Security Practices

Security practices in the SDLC mean building protection against vulnerabilities into every phase of development, not just before launch. This reduces the risk of breaches and costly fixes after release. It has become especially important as cyberattacks grow more frequent and sophisticated.

What is Secure SDLC (SSDLC)?

A Secure Software Development Life Cycle (SSDLC) integrates security practices into every phase of software development instead of treating security as a final check before release.

Security activities are included throughout the SDLC, including:

• Requirements gathering
• Design
• Implementation
• Testing
• Maintenance

By identifying and fixing security vulnerabilities early, teams can:

• Reduce the risk of security breaches.
• Prevent vulnerabilities from reaching production.
• Avoid the much higher cost of fixing security issues after the software has been released.

Integrating Security into Every Phase

Each SDLC phase gets a matching security activity.

• Requirements: Define security objectives and compliance needs.
• Design: Perform threat modeling and establish secure design patterns.
• Implementation: Enforce secure coding standards and use automated code analysis.
• Testing: Apply SAST, DAST, and penetration testing.
• Deployment and maintenance get their own checks too, covering things like validating configurations and monitoring for new vulnerabilities after the software goes live.

OWASP and Secure Coding Standards

OWASP (Open Web Application Security Project) provides some of the most widely used guidance for writing secure code. The OWASP Secure Coding Practices Quick Reference Guide covers 14 critical control categories. Each category maps directly to the types of vulnerabilities that attackers exploit most frequently.