By now we know that nothing online is secure; the recent hack of Yahoo Mail only emphasizes that point. Yahoo reset every user’s password, which should hopefully prevent further damage. But most of us don’t use Yahoo Mail – there are far many more of us on Gmail. Luckily, there’s a quick and easy way to tell if your Gmail’s been hacked – before your account starts sending out messages about weight loss pills. Here’s how to find out. Google gives all Gmail users a quick and easy way to see what devices and IP addresses are accessing their accounts. Scroll down to the bottom of your inbox and look on the right side of the screen. You’ll see a message that says, “Last account activity,” and a timeframe. Below that, you’ll see the word “Details,” which is a clickable link. Clicking that brings you to a list of all the IP addresses and locations that have recently accessed your account. See something fishy? Change your password immediately — and consider enabling two-factor authentication, too.