| Changes in categorized information must be tracked. Without an audit trail, unauthorized access to protected data could go undetected.
To aid in diagnosis, it is necessary to keep track of failed attempts in addition to the successful ones.
For detailed information on categorizing information, refer to FIPS Publication 199, Standards for Security Categorization of Federal Information and Information Systems, and FIPS Publication 200, Minimum Security Requirements for Federal Information and Information Systems. |