Why is it important that an application is connected to the Single Sign On (to login with your netID) of the TU Delft?

When it is not possible to log in to an external application with a netID, there is a general tendency to use the TU Delft email address and password to create an account for the application. Unfortunately, it is almost impossible to guarantee the security of third-party applications. Using your TU Delft email address and password on an unsafe application may risk a serious data breach. For example, if a malicious party gets access to your TU Delft email address and password, access to the TU Delft digital infrastructure will be compromised. Also, your login information might be sold, used to perform phishing or spread ransomware.
The benefit of using the TU Delft Single Sign-On is that your login information will remain on the TU Delft servers which is safer. This reduces the risks of misuse, data breaches and hacks.