For years and years now, publishers/distributors for movies, TV shows, and music have been working with internet service providers to send out copyright strikers to users illegally downloading content. While each ISP is different, most will allow a certain number of 'strikes' before they remove service from the user. Now Nintendo is getting in on that action.
A Spectrum user who decided to illegally download The Legend of Zelda: Breath of the Wild has been sent a copyright strike notice. Spectrum is working on behalf of Nintendo in this instance, who appears to be working with ISPs to try and squash illegal downloads of their games. While Spectrum is the only company we have info for right now, it's very likely Nintendo has teamed up with a number of companies to takes the same precautions.