Is that actually true? I remember I used Sofortüberweisung once when I had to and it didn't feel (for a lack of a better term) as if I was sharing my credential

Is that actually true? I remember I used Sofortüberweisung once when I had to and it didn't feel (for a lack of a better term) as if I was sharing my credentials with Sofort. It was a long time ago but I had the impression that they used some kind of legitimate connection to your bank (with TAN check and my original banking interface) and were only notified about the success (or failure) of the transaction while never receiving the sensitive credentials themselves. Of course I may be wrong.