hacking

Everything from cars to thermostats is being connected to the Internet, raising security concerns. Samy Kamkar, who once hacked MySpace, hopes exposing vulnerabilities will make these things safer.

Security experts estimate it would cost roughly $400 million to replace voting machines and add paper audits. It's about the same amount the Pentagon spent on military bands last year.

"Like any good attack, this one begins with deception," says an investigator. Phishing text messages, including one that appeared to come from the U.S. embassy, were sent to a dozen targets.