National security clearance system under scrutiny after alleged doc leaker's foreign links investigated.

The recent arrest of a National Guardsman for leaking classified documents has raised concerns about the effectiveness of the security clearance process and the number of people with access to top-secret information. More than 1.3 million people currently have top-secret clearance, including government employees, contractors, and others. Some experts suggest that there needs to be a review of the necessity for individuals to maintain security clearances and a validation of the accesses individuals have to networks and databases. The recent leaks have prompted the Senate Intelligence Committee to review the clearance system, but there are concerns about sacrificing employees' privacy further. The Defense Secretary has directed an immediate review of how classified information is handled and secured.