Developed by the Berkman Klein Center for Internet & Society at Harvard University, Lumen tracks cease and desist letters concerning online content. The project documents the notice-and-takedown process and ecology by reporting that a notice or request was sent and received, by and to whom, and regarding what online content.
The Lumen database collects and analyzes legal complaints and requests for removal of online materials, helping Internet users to know their rights and understand the law. These data enable us to study the prevalence of legal threats and let Internet users see the source of content removals.
As of the summer of 2019, the project hosts approximately twelve million notices, referencing close to four billion URLs and the database continues to grow by more than 40,000 notices per week.
Hat tip to beSpacific