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Buchodi's Threat Intel·

🔒OpenAI's ChatGPT Tracks User Data Across Sites

ChatGPT is tracking you across the web

TL;DR

OpenAI's ChatGPT sets a cookie that tracks user data across websites. The __obi cookie connects user activity on various sites to their ChatGPT account, raising privacy concerns.

OpenAI's ChatGPT sets a cookie called __obi that tracks user data across websites. This cookie connects user activity on various sites to their ChatGPT account, allowing OpenAI to collect data like products searched, articles read, and purchase behaviors. This mechanism raises significant privacy concerns for users and developers. The __obi cookie is set with SameSite=None and Secure, and it's sent to OpenAI from ordinary websites visited. Advertiser sites send the cookie back to OpenAI with every request, including GET, POST, and script load requests. The cookie is used to collect identity from the advertiser's page, including hashed email, phone, and name, as well as unhashed country, region, city, and postal code.

Key Points

1

ChatGPT sets a __obi cookie that tracks user data across sites, connecting activity to user accounts.

2

The cookie is sent to OpenAI from ordinary websites visited, including data on products searched and articles read.

3

Advertiser sites send the __obi cookie back to OpenAI with every request, including GET, POST, and script load requests.

4

The cookie collects identity from the advertiser's page, including hashed email, phone, and name, and unhashed country, region, city, and postal code.

5

The __obi cookie is set with SameSite=None and Secure, and it's sent to OpenAI from ordinary websites visited.

Why It Matters

If you're using ChatGPT, your data is being tracked across the web. The __obi cookie connects your activity on various sites to your ChatGPT account, raising significant privacy concerns. Advertisers can use this data to target you more effectively, and the cookie is sent to OpenAI with every request, including sensitive information like postal codes and medical conditions.

OpenAIChatGPTcookiesprivacytracking

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