Equifax executives David Webb and Susan Mauldin are stepping down from their leadership roles following a security breach that potentially impacted up to 143 million Americans.

Webb, who was a chief information officer, will be proceeded by Mark Rohrwasser, who leads Equifax International IT operations. Russ Ayres, who previously was Equifax’s vice president of IT, will hold Mauldin’s position as a chief security officer in the interim, according to the Wall Street Journal.