A bipartisan group of senators is calling on the heads of the FBI and Cybersecurity and Infrastructure Security Agency to brief them on the "size, scope, and details" of how a hacking campaign breached multiple agencies via a software widely used throughout the federal government.
The letter is one in a series of calls to action lawmakers made this week as new details emerge about how hackers managed to breach networks at the Departments of Commerce, Treasury, Homeland Security as well as the National Security Agency and parts of the Pentagon through a vulnerability in the IT management software suite SolarWinds.