The credit reporting agency, Equifax, announced on Sept. 7 that a hack has impacted the credit histories of up to 143 million Americans. (Amber Ferguson/The Washington Post)

President’s decision to have US intelligence agencies look over evidence comes after unrelenting pressure from Democratic lawmakers to declassify information

Russian president says US warnings show Washington is using cyber-attacks as a political tool after Joe Biden says ‘we are sending a message’ to Putin