If the RFI chips permit access to top secret data, the only risk is if a chip is missing and no-one knows it. If a chip is known to be in the wrong hands, or even possibly in the wrong hands, then it gets locked out of the system. Moreover, the system would flag up any attempt to use it.
While speaking with Dr. Rachel Cranston in the hospital, DiNozzo tells the story of seeing an old movie with his mom. It was Angels with Dirty Faces (1938). He says "Bogie was a priest, Cagney a gangster". In reality, Pat O'Brien was the priest - Jerry Connolly in the movie, James Cagney was a gangster named Rocky Sullivan and Humphrey Bogart was the crooked lawyer, James Frazier.