Secure Software Development Checklist Based on OWASP Top 10:2025

Security is not a test performed just before launch. It is a delivery discipline that begins with architecture and continues through coding, review, deployment, monitoring, and incident response. The OWASP Top 10:2025 highlights current categories of critical web application risk and is a useful starting point for engineering conversations.

Turn common risks into delivery controls

Broken access control remains a critical concern: every protected action should be authorized on the server, not only hidden in the interface. Secure configuration requires hardened defaults, environment separation, controlled secrets, and reviewable infrastructure settings. Software supply-chain risk means teams also need dependency inventory, trusted build processes, timely updates, and a response plan for vulnerable components.

Build verification into the lifecycle

• Threat-model sensitive workflows and data
• Apply least privilege to users, services, and administrators
• Validate input and encode output in the correct context
• Review dependencies and protect the build pipeline
• Test authorization, failure paths, and abuse cases
• Log important security events without exposing secrets

Prepare for operation, not only launch

Assign ownership for vulnerability intake, patch decisions, backups, monitoring, access reviews, and incident communication. Confirm that logs can support an investigation and that recovery procedures are tested. Security requirements should also appear in vendor agreements and acceptance criteria when software is outsourced.

No checklist guarantees security. It creates visible responsibilities and repeatable checks so risk can be found and managed earlier.

Reference: OWASP Top 10:2025