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U.S. must improve defences, cyberattack response - Pentagon nominee

Ashton Carter, U.S. President Barack Obama's nominee to be secretary of defense, testifies before a Senate Armed Services Committee confirmation hearing on Capitol Hill in Washington, February 4, 2015. REUTERS/Jonathan Ernst

WASHINGTON (Reuters) - The U.S. government must improve its ability to defend against and respond to escalating cyberattacks on its computer networks, President Barack Obama's nominee for defence secretary Ashton Carter said Wednesday.

Carter said the U.S. responses to cyberattacks could include actions in cyberspace or using other means.

Obama last year blamed a cyberattack on Sony Pictures on North Korea and imposed new sanctions to cut the country's remaining links to the international financial system.

(Reporting by Andrea Shalal and Lisa Lambert; Editing by James Dalgleish)