Sensitive information for members of Congress and their staff and family members has been exposed in a data breach, according to House leaders. The FBI was able to purchase leaked information from health insurance marketplace DC Health Link on the dark web, House Speaker Kevin McCarthy and House Minority Leader Hakeem Jeffries wrote in a letter.

The data included the names of enrollees' spouses, dependent children, social security numbers and home addresses, according to the letter. "This breach significantly increase the risk that members, staff and their families will experience identity theft, financial crimes and physical threats — already an ongoing concern," it reads.