I think my Facebook data has been shared, now what?

Mark Zuckerberg meets with members of Congress on Capitol Hill.
Facebook CEO Mark Zuckerberg, center, is escorted by U.S. Capitol Police as he walks in a hallway prior to a meeting with U.S. Sen. John Thune (R-S.D.), committee chairman of Senate Committee on Commerce, Science, and Transportation, April 9, 2018, on Capitol Hill in Washington, D.C.
Alex Wong | Getty Images