June 19, 2026 at 1:00 AM EDTMeredith Whittaker has spent years arguing that privacy is a prerequisite for a free society. As president of the nonprofit foundation behind the encrypted messaging app Signal, she now finds herself defending that principle against mounting pressure from governments and tech companies alike. Whittaker says business models that rely on data collection, the rise of AI assistants and even well-meaning efforts to protect children online risk undermining private communica...