This week's WikiLeaks revelations, which showed that the CIA can compromise a huge range of devices, shouldn't send you into paroxysms of fear over your smartphone. It should, though, be a solid reminder that one of the best ways to keep yourself safe from hackers is also one of the simplest: Update your gear. What allows hackers access to your devices, after all, are breakdowns and vulnerabilities in the firmware (read: operating system) that runs them.