In the spring of 2013, Clinton aide Monica Hanley works with Bill Clinton aide Justin Cooper to create an archive of Clinton’s emails. Clinton aide Huma Abedin will later tell the FBI that the archive was created as a reference for the future production of a book. Whereas Hanley will later tell the FBI that the archive was created as a security precaution after Clinton confidant Sid Blumenthal had his email account broken into on March 14, 2013, publicly exposing Clinton’s email address.
Cooper gives Hanley an Apple MacBook laptop from the Clinton Foundation and helps her through the process of remotely transferring Clinton’s emails from Clinton’s server to the laptop and a thumb drive. These two copies of the Clinton emails are intended to be stored in Clinton’s houses in Chappaqua, New York, and Whitehaven, Washington, DC. However, Hanley will tell the FBI that this doesn’t happen because she forgets to give the laptop and the thumb drive to Clinton’s staff.
Nearly a full year will pass before Hanley finds the laptop again. She will send it though the mail, only to apparently have it get permanently lost somehow. It is unclear what happens to the thumb drive, but it will not be seen again either. (Federal Bureau of Investigation, 9/2/2016)