A senior U.S. cybersecurity official is leaving government after being asked to resign, an official familiar with the matter said Thursday, part of a wider thinning of President Donald Trump’s administration following Joe Biden’s election win. Bryan Ware, the Assistant Director for Cybersecurity for the Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency (CISA), confirmed to Reuters that he had handed in his resignation on Thursday. He didn’t provide details, but a U.S. official familiar with the matter said the White House asked for Ware’s resignation earlier this week. CISA and the White House did not immediately return an...