Secure Software Deployment, Operations, Maintenance

In the Certified Secure Software Lifecycle Professional (CSSLP) body of knowledge, Secure Software Deployment, Operations, and Maintenance covers the phase after development and testing, when software is released into production and must remain secure throughout its operational life. Security does not end at release; it must be sustained through controlled deployment, continuous monitoring, and disciplined change management. Secure deployment begins with pre-release checks: verifying that all security requirements have been met, obtaining formal security sign-off, and ensuring the release is approved through a documented authorization process. Secure configuration management is critical—hardening servers, applying least-privilege settings, disabling unnecessary services, and using secure defaults. Credentials, keys, and secrets must be managed securely rather than embedded in code or configuration files. Deployment pipelines (including CI/CD) should be protected so that only verified, integrity-checked artifacts, often digitally signed, are promoted into production. Bootstrapping and provisioning must be performed in trusted environments. During operations, organizations perform continuous monitoring through logging, security information and event management (SIEM), and intrusion detection to identify anomalies and attacks. Incident response plans must be in place to detect, contain, eradicate, and recover from security events, with lessons learned fed back into the lifecycle. Vulnerability management involves regular scanning, threat intelligence consumption, and timely patching of both the application and its dependencies, including third-party and open-source components. Maintenance addresses ongoing changes: every patch, enhancement, or configuration change should follow a formal change management process with impact analysis, security review, testing, and rollback plans. Regression testing ensures fixes do not introduce new weaknesses. Finally, secure end-of-life planning ensures software is retired safely, with data sanitized, access revoked, and dependent systems transitioned. Overall, this domain emphasizes that security is a continuous operational responsibility, requiring governance, metrics, and feedback loops so that lessons from production strengthen future development. In the Certified Secure Software Lifecycle Professional (CSSLP) body of knowledge, Secure Software Deployment, Operations, and Maintenance covers the phase after development and testing, when software is released into production and must remain secure throughout its operational life. Security does …