China, for example, constructed its Internet much later, on a more secure set of protocols.

WSJ: Internet Attacks Are a Real and Growing Problem

While there's a perception that a wireless network is less secure than a wired system, Green said new security protocols have made wireless more secure.

FORBES: Hacking The Security Experts

You'd think electronic financial trading would be extra secure, but not so much: One of the most popular application-layer protocols in the financial industry leaves these money applications wide open to attack, according to researchers.

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With protocols like Exchange ActiveSync, email on a smartphone can be made nearly as secure as the email on a PC.

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