This 30-second change to your computer settings is the easiest way to stop hackers

With just a few clicks, you could better arm yourself against hackers and block advertisers from tracking you online.

Cybercrime is projected to cost the global economy more than $2 trillion a year by 2019 according to market analysts Juniper Research, and many of those scams start with phishing — tricking people into clicking on nefarious links through legitimate-looking emails.