NASA steps up security after arrest of former contractor

By Irene Klotz, ReutersCAPE CANAVERAL, Fla. — NASA has shut down access to an online database and banned new requests from Chinese and some other foreign nationals seeking access to its facilities amid mounting concerns about espionage and export control violations, the U.S. space agency's administrator said on Wednesday. The security measures include a complete ban on remote computer access by Ch...

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