Now, the news about these hacks got us wondering about cyberattacks in general, whether they're more widespread than we realize, and perhaps more sophisticated or more targeted to particular entities.

Experts say the military needs to think in revolutionary terms about cyber warfare and adopt preemptive tactics -- but not act unilaterally. Cyber deterrence doesn't have to be a one-nation game.

Chief security strategist at FireEye Inc. Richard Bejtlich discusses the prevalence of cyberattacks and who is most vulnerable. Cybersecurity: Who's Vulnerable To Attack? MICHEL MARTIN, HOST: Now, the ...