If you own a Mac, chances are you woke up this morning with an update notification from the App Store. You might have put aside this seemingly innocuous security update for later in the day, but take our advice: download and install it right now. Yes, I mean right this very second. Hit the update button.
Why? Because this is the same security update that hit iOS last week — the one that fixed vulnerabilities which could allow hackers to read your messages, trace your calls, collect your passwords and even track your location.