Around Late March 2015: An Internet cloud back-up of Clinton’s server is deleted at this time, despite the company managing the server seemingly not knowing the cloud copy exists.

On November 19, 2015, an unnamed Datto executive will be interviewed by the FBI. Datto had provided back-up service and equipment to Platte Rivers Networks (PRN) when PRN was managing Clinton’s private server from June 2013 onwards. It will later be reported that in early August 2015, PRN employees discovered that in addition to a Datto back-up device attached to Clinton’s server, Datto had been also backing up Clinton’s server to the Internet “cloud.” Some internal PRN emails from early August 2015 show some employees acting surprised after being told about this.

A graphic of Datto's cloud structure. (Credit: Datto, Inc.)

A graphic of Datto’s cloud structure. (Credit: Datto, Inc.)

However, according to a later FBI summary of the Datto executive’s interview, he said that PRN must have known about the cloud back-up all along. “As evidence, [he] stated the partner portal, that PRN had log-in credentials to, had a feature displaying backed-up data an options to ‘delete cloud’ or ‘delete local.’ [He] stated PN would have seen their back-ups under ‘delete cloud.'”

More crucially, during the interview, the FBI will show him a Datto document “indicating email records were manually deleted from the Datto secure cloud back-ups of the [Clinton] server in March 2015.” He then will tell the FBI that it couldn’t have been a Datto employee who made the deletions, because there would have been a work ticket created showing that. Furthermore, IP addresses associated with the deletions indicate that someone from PRN must have done it, although PRN had a shared account so it can’t be proven who exactly made the deletions. (Federal Bureau of Investigation, 10/17/2016)

A Datto letter sent to the FBI in October 2015 will indicate that Datto technical experts reviewed administrative files and discovered through the device’s Internet interface that a series of deletions took place on the device on March 31, 2015, between 11:27 a.m. and 12:41 a.m. Furthermore, a much greater amount of data had been “deleted automatically based on the local device’s then-configured pruning parameters.” (US Congress, 9/12/2016) It is unclear if this refers to data deleted from the local Datto device or the Internet cloud back-up.

Although it is unknown who made these deletions, in a May 2016 FBI interview, PRN employee Paul Combetta will confess to deleting all of Clinton’s emails on her server as well as the Datto back-up device in precisely this time period, between March 25, 2015 and March 31, 2015.