Around Spring 2009: Clinton’s computer technician is advised to make a key improvement to the security of Clinton’s private server, but the improvement is never made.

When Bryan Pagliano, the manager of Clinton’s private server while she Clinton’s is secretary of state, will be interviewed by the FBI in December 2015, he will recall a conversation that takes place around the beginning of Clinton’s tenure. This person, whose name is later redacted, recommends that email transiting from a state.gov account to Clinton’s private server should be sent through a Transport Layer Security (TLS) “tunnel.” Most of Clinton’s email traffic is with State Department officials using state.gov accounts.

A diagram of the Transport Layer Security (TLS) (Credit: public domain)

A diagram described as Networking 101: Transport Layer Security (TLS) (Credit: public domain)

A September 2016 FBI report will explain: “TLS is a protocol that ensures privacy between communicating applications, such as web browsing, email, and instant messaging, with their users on the Internet. TLS ensures that no third-party eavesdrops on the two-way communication. TLS is the successor to SSL and is considered more secure.”

Pagliano is the main person to manage problems with the server, but he will tell the FBI that the transition to TLS never occurred. It is not clear why. The FBI will be unable to forensically determine if TLS was ever implemented on the server.

The same unnamed person who gives Pagliano this advice also tells him at the same time that he would not be surprised if classified information was being transmitted to Clinton’s personal server.  (Federal Bureau of Investigation, 9/2/2016)

Around March 7, 2015: Changes are made to the security settings of Clinton’s private server after its existence was revealed in the media.

In the days following a New York Times article revealing Clinton’s use of her private server, Cheryl Mills, who is one of Clinton’s lawyers as well as her former chief of staff, requests that Platte River Networks (PRN), the computer company managing Clinton’s server, conduct a complete inventory of all equipment related to the server. Two unnamed PRN employees do so.

This results in some changes to the server’s security settings around March 7, 2015. According to a September 2016 FBI report, these changes “include disabling the server’s public-facing VPN page and switching from SSL protocol to TLS to increase security.”

The FBI will explain: “TLS is a protocol that ensures privacy between communicating applications, such as web browsing, email, and instant-messaging, with their users on the Internet. TLS ensures that no third-party eavesdrops on the two-way conummication. TLS is the successor to SSL and is considered more secure.” (Federal Bureau of Investigation, 9/2/2016)