- Sources: LWN, HN 49452980
- Summary: Jake Edge reports on an SFC talk at FOSSY 2026 by Bradley Kuhn, Karen Sandler, and Denver Gingerich covering Bambu Studio, a fork of the AGPLv3 PrusaSlicer. The described mechanism is a thin dynamically loaded shim that calls out to proprietary code on Bambu Lab servers, gated by a shared User-Agent string the company claims as a DMCA anti-circumvention measure, and a reverse engineer's repository was taken down on that basis. Gingerich adds an alleged GPLv2 violation over Buildroot-based firmware shipped with no source and no offer of source.
- Why it matters: SFC's fundraiser passed its $250,000 goal and it is hiring a full-time litigation attorney, so this is enforcement capacity rather than a position paper.
- Follow-up: Whether SFC files against Bambu Lab, and whether the DMCA anti-circumvention claim over a User-Agent string is tested.
send feedback on this story