According to NATO security regulations, how many levels of security classification are there?

The correct answer identifies that there are four levels of security classification according to NATO security regulations. These classifications are designed to protect information based on the degree of sensitivity and the potential impact of unauthorized disclosure. The four levels are:

1. Unclassified: Information that does not require protection and can be freely shared.

2. Restricted: Information that could cause damage to national security if disclosed but is not as critical as higher classifications.

3. Confidential: This classification marks information that, if disclosed, could cause damage to national security.

4. Secret: The highest classification for information that, if disclosed, could cause serious damage to national security.

Understanding these levels is crucial for a Foreign Disclosure Officer, as they must navigate the regulations surrounding information sharing, ensuring that sensitive data is handled appropriately in accordance with NATO standards.