ISC2 Certified Secure Software Lifecycle Professional (CSSLP) Practice Question
Your organization is retiring a legacy CRM system that holds customer PII. You have already revoked all service accounts, canceled software licenses, and archived source code and documentation. According to secure decommissioning best practices, which remaining task should you perform last before declaring the application fully decommissioned?
Delete the firewall rules that routed traffic to the legacy CRM servers.
Permanently erase all remaining customer data and backups that are no longer subject to retention requirements.
Disable performance and availability alerts for the CRM hosts in the monitoring platform.
Mark the servers as retired in the configuration management database (CMDB).
Securely destroying residual production data and backups should be the final action. All other activities-such as credential revocation, license termination, configuration cleanup, and archival-must occur first to ensure that no operational dependency remains. Once data retention obligations are met, irreversible data destruction eliminates the possibility of future exposure, officially closing out the decommission process. The other choices are important but are completed earlier: removing firewall rules is part of configuration cleanup, updating the CMDB occurs when assets are taken offline, and disabling monitoring alerts happens once the system is no longer in service.
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Why is data destruction the last step in decommissioning a system?
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What methods are commonly used to permanently erase data?
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ISC2 Certified Secure Software Lifecycle Professional (CSSLP)
Secure Software Lifecycle Management
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