Hello Gunther,
I got sometimes the following messages on your websites from MSE:

Hi, I'm quite sure that is something on your computer. I check my sites daily with various scanners.
Please delete your browser cache and make a full system scan. I hope that helps.

This post was last modified: 2015-12-25, 17:44 by c_joerg.

I don`t think so. I checked my PC already. I had the same message 3 month ago on a company PC. And this PC is cleaned up every morning and has a different virus scanner. But it is not reproducible...