Security tip: Find out which services offer two-factor authentication

The ChipTan procedure used by a growing number of banks uses a TAN generator to make online banking much more secure against hackers. — dpa

Is my account really secure? Has my password already been cracked? If you use two-factor authentication to secure your online shopping, banking or social media accounts, you'll have less to worry about.

With two-factor authentication (2FA), you will be asked to enter a code in addition to your password. The code can be sent to a smartphone as a text message, for example, or displayed in an app.

Twofactorauth.org offers a brief overview of websites and services offering 2FA. That's important because the actual subpages allowing you to enable this additional layer of protection aren't always easy to find.

Twofactorauth.org lists various national and international services, ranging from banks, communication services, cryptocurrency exchanges and payment services to shopping sites and video game providers.

It tells you whether they offer two-factor authentication and which type of 2FA is used. Common methods include software or hardware tokens, text messages and e-mails. If a service doesn't offer 2FA, you'll have the option of sending a message to the service provider. – dpa