Open Source projects face a new reality: vibe coded pull requests, generated issue reports, and supply chain attacks at a scale maintainers have never seen before. More time goes into filtering noise and spotting subtle malicious code, less into actual development. How do we build and accept trustworthy contributions going forward? What tools, processes, or social norms actually help? Let's spark the discussion at #FrOSCon2026. Submit your talk: https://froscon.org/cfp/cfpapers/ #froscon21