I really hope there is some law against companies actively spying on people, as it sounds like happened in the article, but I struggle to think of where this fa

I really hope there is some law against companies actively spying on people, as it sounds like happened in the article, but I struggle to think of where this falls legally. The thought that companies could start to take an active, vengeful take is very frightening. Especially if they work together and share private information. I'm not sure that's really illegal either? Would you be able to get a restraining order against a company? How would you prove it was them anyway? This really turns my stomach like an Orwellian novel. It feels like it could easily happen to anyone.