[ronsor]

They could, but that wouldn't mean much for a few reasons:

* Cryptocurrency can't really be confiscated

* These malicious miners likely live in a country with a dubiously competent legal system.

* Lastly, it's not worth the money to try to collect.

[BrendanLong]

Expanding on that last point, one of the examples in the article is someone making ~$70 per month in cryptocurrency. The CI people -could- send a lawyer to Vietnam to try to collect that $70 but even if they succeed it's very not worth it.