All over the AP wire.... You should read real news occasionally.
The outgoing White House also became concerned about the Trump team’s handling of classified information. After learning that highly sensitive documents from a secure room at the transition’s Washington headquarters were being copied and removed from the facility, Obama’s national security team decided to only allow the transition officials to view some information at the White House, including documents on the government’s contingency plans for crises.
https://apnews.com/b109774705594ae887a86b337c444e6b/Trump-transition-raised-flags-about-Flynn-Russia-contacts