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Post #464 15
ChatGPT now knows what you do on other websites via ad collector

OpenAI's ad collector sets a SameSite=None cookie called __obi that links ChatGPT accounts to off-site browsing data, including hashed emails and cleartext postal codes scraped from advertiser sites.

💬 Users express deep concern over standard adtech tracking being applied to highly sensitive AI chat histories.
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719 points · 382 comments · #daily · @HNDigestEn
Buchodi's Threat Intel ChatGPT now knows what you do on other websites via ad collector OpenAI's ad collector at bzr.openai.com sets a cookie called __obi, scoped to .openai.com. The value is while you are on ChatGPT and tied to your ChatGPT account. __obi is then sent to OpenAI from ordinary websites you visit. Any company that buys ads on…
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