The number of affected lawmakers is expected to rise, and the breach may have impacted more than 56,000 people total, according to the report.
Congressional staff have been notified by the Senate Sergeant at Arms that the breach exposed names, Social Security numbers, birthdays, physical addresses, email addresses, phone numbers, and race data for some federal employees.
A letter from House leaders to the head of the DC Health Benefit Exchange Authority stated that the FBI purchased some of the hacked material on the dark web, including Social Security numbers and other sensitive information connected to congressional members and staff.
According to CBS, the breach has led to three ongoing investigations and a civil lawsuit against the District of Columbia.
