Instagram reportedly started to roll out two-factor authentication yesterday, so accounts will be more secure and less prone to hacker attacks. According to Josh Constine at TechCrunch, a tipster at Instagram says you'll soon be able to verify your account with a phone number and use it to authenticate your identity every time you log in. An Instagram spokesman has also confirmed the news with The Verge. Once you've verified your phone number, when you open your Instagram app and try to sign in with your account name and password, you'll also be sent a text message with an authentication code required to log in to your account. Two-factor authentication is one of the best ways to keep your accounts secure, so it's about time Instagram finally added the feature. There's no official word yet on when you'll receive the update, but the feature should be rolling out to everyone soon.