Personal data security

Officials: Chinese had access to U.S. security clearance data for one year

The recently disclosed breach of the Office of Personnel Management’s security-clearance computer system took place a year ago, giving Chinese government intruders access to sensitive data for a year, according to new information.

The considerable lag time between breach and discovery means that the adversary had more time to pull off a cyber-heist of consequence, said Stewart Baker, a former National Security Agency general counsel.