We don't have a download link yet, but you can find it using Google.
Review
T-Online Dialerschutz is developed by T-Systems Enterprise Services GmbH and is used by 63 users of Software Informer. The most popular versions of this product among our users are: 1.2, 1.3, 2.1, 2.3, 2.4, 2.5, 2.6 and 2.7. The names of program executable files are Defender.exe, Defender64.exe and kernel.exe. The product will soon be reviewed by our informers.