When derivative classifiers incorporate classified information from existing?

When derivative classifiers incorporate classified information from existing sources, they must ensure that the information is properly marked and that the classification levels are consistent with the original source. They are responsible for applying appropriate classification guidance and ensuring that any new information derived from the original source does not inadvertently disclose or elevate the classification status. This process helps maintain the integrity of classified information and safeguards national security. Ultimately, derivative classifiers play a crucial role in the responsible management of sensitive information.