WASHINGTON (CBSDC) – As former Secretary of State Hillary Clinton turns over her private email server to federal investigators, the current head of the State Department says he thinks it’s a given that Russia and China are reading his emails.

“It is very likely. It is not outside the realm of possibility and we know they have attacked a number of American interests over the course of the last few days,” Kerry told “CBS Evening News” anchor Scott Pelley. “It’s very possible, and I certainly write things with that awareness.”

In recent months there have been several well-publicized government computer breaches.

In June, hackers got into a computer system operated by the Officer of Personnel Management, potentially gaining access to the personal data of four million government employees.

Officials told CBS News all signs point to Chinese hackers as the source of the breach.

Pentagon Joint Chiefs emails were compromised in July, reportedly by Russian-based hackers.

Kerry said the threat of digital espionage is “of enormous concern” to the administration.

“Spying has taken place for centuries and the latest means of spying is to be going after peoples’ cyber,” explained Kerry. “Companies spend billions of dollars to protect themselves, the United States government does the same.”

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