In 2020, the US federal court filing system was attacked by three hostile foreign
The attack was part of a larger breach in the systemsecurity that led to a "security failure" in 2020. However, during the hearing, Nadler acknowledged that the committee learned of the "astonishing breadth and scope" of hacking only in March of this year.
Matthew Olsen, Assistant Attorney General forHomeland Security, testified at the hearing and said his department is "working very closely with the Judicial Conference and judges across the country to resolve this issue."
Information about the hack is still kept secret– Senator Ron Wyden even sent a letter to the Administrative Office of the US Courts, expressing concern that "the federal judiciary has yet to publicly explain what happened and has rejected numerous requests to provide unclassified information to Congress."