Your organization has just confirmed a data breach involving a customer information database. The IRT has been activated. What should be the first action taken in the response phase?
Notify executives and the board of directors
Begin collecting evidence for forensic analysis
Implement measures to limit the breach's impact
Restore affected systems from backups
The correct response is to implement measures to limit the breach's impact. When an organization confirms a security incident such as a data breach, containment is the first priority in the response phase. This helps minimize additional damage to systems or data loss. Containment typically involves isolating affected systems, blocking malicious IP addresses, disabling compromised accounts, or taking other measures to limit the scope of the breach.
While notifying executives is important, it's not the first action in response - containing the breach takes precedence to limit damage. Similarly, although evidence collection is crucial, it comes after containment to ensure the situation doesn't worsen while evidence is being gathered. Restoring systems from backups is part of the recovery phase that happens after the incident has been contained and eradicated.
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