Validators who act dishonestly are punished under proof-of-stake. Individuals that try to assault the community are discovered by Gasper, which flags the blocks to just accept and reject based on the validators' votes. There’s a new edition of the web page but it really’s only in English at this time. https://franciscoxkqka.blogdosaga.com/26724660/manual-article-review-is-required-for-this-article