What type of information does the term Protected Critical Infrastructure Information refer to?

The term Protected Critical Infrastructure Information specifically refers to sensitive information that pertains to national security and the operation of critical infrastructure. This information is vital because it helps protect the nation's essential services and assets from threats and vulnerabilities. Critical infrastructure includes sectors such as energy, water, transportation, and healthcare, where the loss, disruption, or compromise of such services could have a significant impact on public safety and national security.

In contrast, publicly accessible information does not require protection as it is already available to the general public. Volunteered personal details and general employee data do not fall under the category of critical infrastructure information concerning national security, as they pertain more to individual privacy and employment records rather than the broader implications of national infrastructure vulnerabilities.