ISC2 Systems Security Certified Practitioner (SSCP) Practice Question
After a faulty application update corrupts transaction records in the company's on-premises finance database, the security administrator is asked to implement a corrective control that returns the system to a fully functional state with the least additional risk. Which action best fulfills this requirement?
Activate application whitelisting to block any executables not explicitly approved.
Deploy a host-based intrusion detection system to alert on further unauthorized file changes.
Restore the most recent verified backup of the finance database and validate data integrity before bringing the application back online.
Enable storage array mirroring so new writes are duplicated to a secondary disk set.
Corrective controls are applied after or during an incident to restore normal operations and mitigate any residual impact. Recovering from good backups directly addresses the corruption by replacing damaged data with a verified copy and returning the service to its last known-good state. The other options do not repair the existing damage: host-based intrusion detection is a detective measure, storage mirroring is preventative (and does not fix already-corrupted data), and application whitelisting is also preventative, aimed at blocking future unauthorized software execution. Only restoring a validated backup actually corrects the problem caused by the failed update.
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ISC2 Systems Security Certified Practitioner (SSCP)
Security Concepts and Practices
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