How lessons learned from the 2016 campaign led US officials to be more open about Iran hack

FILE - In this Feb. 25, 2015 file photo, the Homeland Security Department headquarters in northwest Washington. (AP Photo/Manuel Balce Ceneta, File)

WASHINGTON (AP) — The 2016 presidential campaign was entering its final months and seemingly all of Washington was abuzz with talk about how Russian hackers had penetrated the email accounts of Democrats, triggering the release of internal communications that seemed designed to boost Donald Trump's campaign and hurt Hillary Clinton's.

Yet there was a notable exception: The officials investigating the hacks were silent.

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