Random certificate question popup

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Its first time I’m seeing this window, I don’t know:

  • what is it?
  • why I’m seeing it?
  • what should I take as action?

Ultimately I don’t trust anything like this popup. I’m afraid of security incident.

What did you do just before that popped up?

Also, if you widen the pop up, you should be able to see the full originating address, but yes, good you didn’t react to it !

Immediately before this just browsing the web.

But few days agoo, i installed some .rpm packages with microsoft ttf fonts but It dudn’t succesd, dont remember why.

Later i saw that packman provides them.

This is the most unsecure thing my OS have seen so far, as I remember.

Would You recommend a fresh install?