thank you for your reply! The article, which do you have linked was the only one article, which I have found to. But this article is from 2011. In the IT world is this a long time.
Now, I haved called the Discover customer service a second time. After the description of the 3-D Secure procedure, they told me, that they not know this procedure. Now, i've to assume that they not offer 3-D Secure. If anyone have coincidentally additionally informations, i would glad about these informations.
BTW: Thank you for your translate into german.
But you don't need to translate into german.