Official Google Blog: “Has anyone you know ever lost control of an email account and inadvertently sent spam—or worse—to their friends and family? There are plenty of examples…that demonstrate why it’s important to take steps to help secure your activities online. Your Gmail account, your photos, your private documents—if you reuse the same password on multiple sites and one of those sites gets hacked, or your password is conned out of you directly through a phishing scam, it can be used to access some of your most closely-held information…2-step verification requires two independent factors for authentication, much like you might see on your banking website: your password, plus a code obtained using your phone. Over the next few days, you’ll see a new link on your Account Settings page.”