What is the Common Criteria?

The Common Criteria (CC) is an international standard, also available as ISO/IEC 15408 used when evaluating the security properties of IT products and systems. It defines a framework for the oversight of evaluations, syntax for specifying the security requirements to be met and a methodology for evaluating those requirements. The CC is used by governments and other organizations around the world to assess the security of information technology products and is often specified as a pre-requisite to procurement.

See https://www.commoncriteriaportal.org/cc/ for more information or to obtain the standard.