Hackers Stole U.S. Data on More Than 20 Million People

Hackers stole Social Security numbers and other personal data for about 22.1 million people in breaches of the U.S. government’s personnel office, the Obama administration said July 9.

The total includes new data related to the breach of security clearance applications as well as information previously released on the theft of personnel records, the Office of Personnel Management said.

“We live in a world where the cybersecurity threats we are facing are increasingly growing broader,” Michael Daniel, White House cybersecurity coordinator, told reporters in a conference call announcing the findings. “The adversaries are growing more sophisticated.”

On Capitol Hill, lawmakers ...