Katie Arrington said her role is to help alleviate policies that are hindering DOD personnel from countering adversaries.

Katie Arrington was announced Monday as the Pentagon's official "Performing the Duties of the Department of Defense Chief Information Officer."

Arrington comes back to the Pentagon where she was the chief information security officer for the department's acquisition and sustainment organization during the first Trump administration.

It is the latest lawsuit filed by the former Pentagon official after she was last year placed on paid leave.

In her resignation missive, the former DOD official writes that the allegations leveled against her were false and politically motivated.