The controversy over Hillary Clinton's use of a private email server has raised another question: how hack-proof were her communications? Cyber-security experts warn of vulnerability.

FOX News Radio's Jared Halpern has more from Washington.

"Cyber INsecurity."

Earlier this month, the former Secretary of State defiantly cast aside security concerns from using her own email and server.

(Clinton) "The system we used was set up for President Clinton's office and it had numerous safeguards."

Adding there were no cyber breaches.

(Clinton) "The use of that server, which started with my husband, certainly, proved to be effective and secure."

But so-called White-Hat hackers, who help corporations avoid cyber intrusions tell FOX News, they're not so sure about the server's security, noting simple IP searches were able to pinpoint the location of the server.

In Washington, Jared Halpern, FOX News Radio.

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