May 31, 2013—June 2013: A device is bought to make back-ups of Clinton’s private server, but a Clinton company makes clear it doesn’t want any back-up data stored remotely.

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Datto Cloud engineer Charles Lundblad (left) chats with CEO and founder of Datto, Austin McChord, at the firm’s Norwalk, CT headquarters. (Credit: Erik Traufmann / Hearst Connecticut Media)

On May 31, 2013, Platte River Networks (PRN) takes over management of Clinton’s private server. On the same day, PRN buys a Datto SIRIS S2000 data storage device, which is made by Datto, Inc. Over the next month, this is attached to Clinton’s server to provide periodic back-up copies of the data on the server. PRN sends a bill for the device to Clinton Executive Service Corp. (CESC), which is a Clinton family company.

CESC employees work with PRN employees on how the Datto device is configured. Datto offers a local back-up and a remote back-up using the Internet “cloud.” CESC asks for a local back-up and specifically requests that no data be stored in the Internet cloud at any time.

However, due to an apparent misunderstanding, back-up copies of the server will be periodically made both locally and in the cloud. This will only be discovered by PRN as a whole in August 2015. (US Congress, 9/12/2016)

However, despite internal PRN emails from August 2015 indicating many PRN employees didn’t know about the Datto cloud back-up until that time, the FBI will later find evidence that an unknown PRN employee deleted data from the cloud back-up in March 2015, meaning that at least one PRN employee had to have known about the cloud back-up by that time.