Biden castigates Trump over recent cyberattack on U.S. government President-elect Joe Biden speaks at a news conference about his administration’s transition and the holidays at the Queen Theater in Wilmington, Del., on Tuesday, Dec. 22, 2020. CREDIT: Photo by Sarah Silbiger for The Washington Post Lisa Rein and Felicia Sonmez, the Washington Post WILMINGTON, Del. — President-elect Joe Biden unleashed a broadside Tuesday against President Donald Trump’s stewardship of national security, accusing his administration of opening the door to a far-reaching cybersecurity attack that has p...