Japan flags AI privacy risks for Google, Meta, TikTok, MediaNama reports
MediaNama reports Japan ministry flags gaps in how Google, Meta, TikTok and LINE Yahoo handle user data for AI and ads.
TL;DR
- MediaNama reports Japan ministry calls for early checks on AI chat data use for training and ads by Google, Meta, TikTok and LINE Yahoo.
- MediaNama reports opting out of targeted ads does not stop external tracking data collection for any of the four firms.
- MediaNama reports only Google and Yahoo! Japan let logged-out users opt out of ad targeting based on outside-site data.
MediaNama reports that Japan’s Ministry of Internal Affairs and Communications wants tighter checks on how Google, Meta, TikTok and LINE Yahoo handle personal data in AI chats and ads.
MediaNama reports that the ministry’s User Information Working Group 2026 report notes differences in user controls and privacy explanations across the four firms. Its deliberations ended October 19-21, 2026.
AI chats and ads
MediaNama reports the ministry wants early reviews of how conversational AI uses personal info for training and advertising. According to MediaNama, Meta uses chats with users 18 and older to improve ads, though none appear inside the chatbot. MediaNama reports LINE Yahoo shows ads based on AI prompts and was exploring older chats for ads as of August 2026, with no opt-out.
MediaNama reports Google does not feed Gemini chats into targeted ads, though search ads appeared in the AI as of September. According to MediaNama, TikTok said it does not use AI conversations for advertising or ad personalisation.
Training data and opt-outs
MediaNama reports Google generally uses third-party information for AI training, subject to privacy checks, while Meta also pulls in outside content. LINE Yahoo reported no such use, according to MediaNama. MediaNama notes opting out of targeted ads does not stop data collection via tracking tools on other sites for any of the four companies. The data may still be used for other purposes under privacy policies.
MediaNama reports only Google and LINE Yahoo’s Yahoo! Japan service let users without accounts opt out of targeted advertising based on external-site data. All four collect some device info from logged-out users, according to MediaNama.
The Tea
This early-stage scrutiny from Japan shows regulators are waking up to how AI turns everyday chats into ad fuel. If other countries follow, big tech’s data playbook could face real pushback soon.
Sources
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