Cult of the Dead Cow (cDc), a hacking group known for its activist endeavors, has built an open source tool for developers to build secure apps. Veilid, launched at DEF CON on Friday, includes options like letting users opt out of data collection and online tracking as a part of the group’s mission to fight against the commercialization of the internet.

“We feel that at some point, the internet became less of a landscape of knowledge and idea sharing, and more of a monetized corporate machine,” cDc leader Katelyn “medus4” Bowden said. “Our idea of what the internet should be looks more like the open landscape it once was, before our data became a commodity.”