![]() You have to reveal your phone number to the website or app. ![]() Hackers have found multiple ways to bypass 2FA by SMS, including hacking into the SS7 network to intercept 2FA codes (new window) and redirecting phone numbers with SIM swap attacks (new window). ![]() SMS messaging is unencrypted and inherently insecure.Or you may be told the code via a voice message sent to your phone.Īlthough it’s easy to set up and use SMS for 2FA, we don’t recommend it at all because: Next time you log in, you’ll be asked to enter a five- or six-digit one-time passcode (OTP) that’s texted to your phone after you enter your username and password. When you enable 2FA by SMS, you need to provide a mobile phone number. Here are the five main types of 2FA and the pros and cons of each. Websites and apps offer different ways to secure your account with 2FA, and not all are equally secure. They’ll need a second factor to access your account. When you enable 2FA for an online account, if a criminal discovers just one of these factors, like your password, they’ll be out of luck. What time it is (time factor): the time you’re trying to log in or the time you’re taking to log in, based on the assumption that logging in takes a limited, predictable time.Where you are (location factor): the place you’re trying to log in from, for example, as determined by your IP address (new window) or GPS on your mobile phone.Some apps and websites may use two other factors to secure accounts: Something you are (inherence factor): your fingerprint, face, iris, retina, or other biometric data.Something you have (possession factor): a physical security key, mobile phone, or smart ID card.Something you know (knowledge factor): a password or passphrase, personal identification number (PIN), or answer to a security question.There are three main types of authentication factors used for online consumer accounts: In 2FA, authentication factors are the ways you can prove it’s you trying to log in. In short, with 2FA you need to provide your username/password and one other way to verify your identity, known as an authentication factor. Once you’ve passed the second authentication process - by providing the correct security code, fingerprint, etc.You’re then asked for a second form of authentication, like a one-time security code, a fingerprint, a physical key you plug in, or some other method.The site or app’s servers recognize your username and password.When you visit a website or open an app, you’re asked to enter your username and password to log in.Here are the basic steps for 2FA, though the details vary by website, app, and the authentication method used: With 2FA enabled, if a password is ever cracked or revealed through phishing or a data breach, your online account will remain secure.ĢFA requires you to verify your identity twice when you log in - first with your username/password and then with something extra like a one-time security code or fingerprint. Scammers could trick you into entering your password on a fake website. Similarly, phishing attacks are on the rise (new window) and becoming increasingly targeted, so even seasoned IT pros can fall victim. Here’s how to check if your email or passwords have been revealed (new window). But even if you use strong, unique passwords (new window) for all your accounts, your passwords could still be leaked in a data breach (new window).Īs data breaches are increasingly common and billions of passwords have been leaked (new window) in recent years, there’s a chance some of yours might be among them. Many people still use a single, easy-to-guess password for many accounts. ![]() Passwords aren’t enough to protect your online accounts. If you’ve ever been sent an SMS text with a passcode to log in to a website after entering your username and password, that’s a kind of 2FA. Once you’ve entered your password, you might have to enter a code generated by an authenticator app on your phone, plug in a physical security key, or use another method to prove it’s you logging in. Instead of just using your username and password to sign in, 2FA requires you to verify your identity again to access your account. Two-factor authentication (2FA), also known as two-step verification, is a security process that requires two forms of identification when you log in to an online account. ![]()
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