Is it possible to influence a competitor's site with bad links?

Question

Search Engine Optimization

On the competitor's website (bulletin board) it is possible to add links to external resources. But outgoing links with the rel="nofollow" attribute. If you add an ad with a link to an adult site or a site with a virus, will these actions affect the site (position, etc.)?

Answer 1

There is such an opportunity, but it is better not to spoil your karma.

Answer 2

For the long term, you need to improve your product, and not put toothpicks in the competitor's wheels.

Answer 3

I agree with you, but my question is still of interest, because how is it possible to influence my site