Choosing to receive a one-time code as an SMS on your phone or as an e-mail is regarded as less secure compared with relying on authenticator apps that generate time-sensitive numerical strings.

Signing up for an extra layer of protection besides your password – such as a pass code, push notification or security question – has long been an obvious way to secure your online bank or investing account.

But with sophisticated cyberattacks ever more common, online-security experts warn that some types of two-factor authentication, or 2FA, are better than others.

Generally, choosing to receive a one-time code as an SMS on your phone or as an e-mail is regarded as less secure compared with relying on authenticator apps that generate time-sensitive numerical strings.

Financial institutions oft

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