The definition of counterfeit parts, according to the DOD is:
An unlawful or unauthorized reproduction, substitution, or alteration that has been knowingly mismarked, misidentified, or otherwise misrepresented to be an authentic, unmodified electronic part from the original manufacturer, or a source with the express written authority of the original manufacturer or current design activity, including an authorized aftermarket manufacturer. Unlawful or unauthorized substitution includes used electronic parts represented as new, or the false identification of grade, serial number, lot number, date code, or performance characteristics.
How does this affect your tool or system production? What is your risk if DOD finds questionable parts in something you supplied? How can you guarantee that the parts you are using are viable?
If you have concerns regarding this definition and how it can effect your bottom line contact firstname.lastname@example.org - Ed is VP of Business Development with significant experience dealing with obsolescence as well as prevention of use with counterfeit parts.