Which of the following is essential for protecting classified information during an incident?

Ensuring classified information is kept secure from further disclosure is fundamental in protecting sensitive information during an incident. When an unauthorized disclosure occurs, the first priority is to contain the situation and prevent any further exposure. This involves implementing immediate measures to stop the spread of information and safeguard it from falling into the wrong hands.

By securing classified information, you uphold national security interests and protect against potential harm that could arise from the unauthorized release of sensitive data. This could involve physically securing documents, restricting access to digital files, or executing containment protocols to manage the incident effectively.

While documenting actions taken is important for accountability and future reference, and staff training sessions are crucial for prevention and awareness, the immediate need during an incident is to ensure that further disclosures do not occur. Sharing information with trusted colleagues does not automatically ensure security and could potentially lead to further breaches if not managed properly.