Google's SynthID watermark holds up, but doesn't stop misinformation

Ars Technica examines Google's SynthID watermarking system and finds it resists tampering well. But watermarking alone doesn't solve the broader problem of identifying what's real online, since unwatermarked or non-Google content remains untraceable.

Why it matters: Watermarking has been pitched as a key defense against AI-generated misinformation, but this piece shows its limits: it only works within a walled garden of participating tools. Paired with recent findings on deepfakes and AI-generated books slipping through unlabeled, it suggests provenance tech alone won't fix the trust problem without broader industry and regulatory buy-in.