Data seems to be from before the AFD was member of the parliament. This doesn’t exclude a political motive, but offers a non-political explanation as well.

Data is as fresh as early 2018 - I read in the German press - which means well after AfD became a player.

The political parties are a different question, I was mostly referring to the private people that were hacked.

In addition to hacking the systems of political parties, they also hacked many left-wing musicians, artists, TV hosts of late night shows, etc.

I've clarified my original post with a footnote.

Indeed, the Wikipedia page describes them as center-right.

European center-right, it would be very different on the American spectrum

Well, I have to give you that.

But here in Germany, CDU was always considered "right".

For example, CDU/CSU politicians didn't want gay people to call what they have a "marriage". Merkel said so back in 2017, and eventually voted against the law together with more than 2/3rds of her party; the law passed anyway with the votes of the CDU's coalition partner SPD and the opposition parties. So there are some commonalities with the US right wing politicians and their policies, after all.

You can't position parties in a one-dimensional spectrum. At least two dimensions (economic freedom and personal freedom) are necessary. (You know, the age-old https://fee.org/media/9818/20131203_fulmer1a.png)

True "classical liberals" might as well be nonexistent for all the power they have in modern politics. Even pols who identify as "classical liberals" mostly just end up voting with one of their country's (economically + socially) right-wing parties anyway.

I just used that image as an example, I don't agree with the denominations used.

But keep in mind that CDU is Angela Merkel's party. She is probably the hate figure of the far-right in Germany.