Biden banned Rump from receiving further security briefings within days of Rump leaving office...
https://www.nytimes.com/2021/02/05/us/politics/biden-trump-intelligence-briefings.html
If they didn't actually revoke Rump's security clearance they sure-as-hell SHOULD have, given his irresponsibility and traitorous behavior on January 6.
The term for presidents leaving office and losing access to documents is called read out.