🛡️ Free practice test question from: Cyber defense (Security+)

In the scenario of a critical cybersecurity incident exploiting a previously unknown vulnerability (often referred to as a zero-day vulnerability), it's essential to adopt a strategy that not only addresses the immediate threat but also enhances the organization's ability to detect and respond to future threats comprehensively.

While A) (isolating compromised segments) is crucial for immediate containment, it primarily addresses the current incident without necessarily preventing future compromises.

B) (deploying system-wide updates) may not be effective if the vulnerability is unknown and no patches are available.

C) (reverting systems) is also a reactive measure that doesn't offer ongoing protection.

Therefore, D) offers a proactive and comprehensive approach to securing the network infrastructure against both the current incident and potential future threats.