U.S. officials are discussing whether new standards should be set for government action in response to hacks. (Photographer: Daniel Acker/Bloomberg)

U.S. Agency Backs Tech Firms That Deny China Hacked Their System

(Bloomberg) -- The Department of Homeland Security said it has no reason to question denials by U.S. technology companies of a report that Chinese spies had used a microchip to hack into American c...