Avoid logins via Google, Apple or Microsoft

Some apps and websites offer you the option of logging in to them using SSO (single sign-on) with accounts from other companies or groups. This is intended to increase convenience because you don't need to register separately. Unfortunately, this procedure has some disadvantages. If your main password for an SSO provider is compromised, all other apps and websites that you have used to log in will also be affected. In addition, the providers of such logins collect detailed data about the use of the apps and websites in the background and have full access to your account. This enables even more detailed profiling for data traders and advertising networks.