On June 24, 2015, Intelligence Community Inspector General Charles McCullough learns in a letter written by Clinton’s personal lawyer David Kendall that copies of Clinton’s emails are being kept on a thumb drive in a safe in Kendall’s Washington, DC, office. This concerns McCullough, since those emails may still contain highly classified information.
The next day, McCullough calls an FBI official and has that person work with the State Department to give Kendall a government-issued safe to store the thumb drive instead. (The Washington Post, 8/14/2015)
The safe is installed in the office Kendall shares with his Williams & Connolly law partner Katherine Turner on July 6. Kendall and Turner had both recently gotten security clearances. (Politico, 8/25/2015)
However, concerns soon arise that some of Clinton’s emails may contain “top secret” classified material, and even the new safe may not be secure enough. Additionally, the security clearances of Kendall and Turner may not be high enough to allow them to read or possess top secret information. Further security arrangements are made, although it’s not clear what those are.
Kendall finally turns the thumb drive over to the FBI on August 6, ending the problem. (Politico, 9/17/2015)