[lossolo]

And a lot of people would test to know if they need to use the solution, don't they?

Look at this site and twitter account. You can't get any info on who registered the site because it's protected by "privacy guard", why should anyone trust this site? And their twitter account looks more like marketing campaign from competition.

[homakov]

You can install the fix no matter what, it's innocent. They should have offered source code for their test app instead, but that's definitely not malicious.

[fourchette]

The test source code was made available here https://pastebin.com/2wd7GDTC.