Director of US agency that lost 25 million personal records to hackers resigns

The director of the Office of Personnel Management has resigned after a hack that affected 25 million Americans, Julie Davis of The New York Times reports.

In a statement, OPM said hackers stole the Social Security numbers of 21.5 million people, including 19.7 million individuals who applied for a background investigation.

The figure is much higher than OPM's original estimate of 4 million and amounts to roughly 7% of the US population.

Archuleta reportedly informed President Obama of her resignation in person this morning. Beth Cobert, deputy director of management at the Office of Management and Budget, will be serving as the agency's interim head, the Times reported.

Lawmakers had pressed Obama to dismiss Archuleta after OPM's revelations on Thursday. House Speaker John Boehner (R-Ohio) issued a fiery statement calling on Obama to fire her. US Sen. Mark Warner (D-Virginia) called the breach a "huge deal" and urged her to step down.

"Director Archuleta's slow and uneven response has not inspired confidence that she is the right person to manage OPM through this crisis," Warner said.

Archuleta conceded on Friday that she felt the agency could only "move beyond the current challenges" with new leadership, according to the Times.