https://techcrunch.com/2021/04/22/proctorio-sued-dmca-student-tweets/

A university student is suing exam proctoring software maker Proctorio to “quash a campaign of harassment” against critics of the company, including an accusation that the company misused copyright laws to remove his tweets that were critical of the software.

The Electronic Frontier Foundation, which filed the lawsuit this week on behalf of Miami University student Erik Johnson, who also does security research on the side, accused Proctorio of having “exploited the DMCA to undermine Johnson’s commentary.”