What does ChatGPT know about me?

Jonathan Fielding
7 min readMar 24, 2023
Photo by Jonathan Kemper on Unsplash

At lunchtime yesterday, I decided to have fun with ChatGPT to see what it knows about me. I wanted to know if it could be used to find out information about me that could later be used against me in the future for things like phishing attempts or even answering bank security questions.

The Experiment

To begin with, I wanted to see if ChatCPT knows who I am by asking it outright.

To which I got my first reply:

Jonathan Fielding is a public health leader and advocate who served as the Director of the Los Angeles County Department of Public Health from 2008 to 2014. He is also a professor of Public Health and Pediatrics at the University of California, Los Angeles (UCLA), where he has served in various leadership positions.

Throughout his career, Fielding has been recognized for his contributions to public health, including his work in improving community health, preventing chronic diseases, and reducing health disparities. He has also authored numerous publications on public health topics and served on several national committees and advisory boards related to health policy and disease prevention.

Overall, Jonathan Fielding is a prominent figure in the field of public health and has dedicated his career to improving the health of individuals and communities through research, policy, and advocacy.

From this first reply, we can see that it does know of a Jonathan Fielding, but that is certainly not me (although I have received emails destined for this guy before) so I let ChatGPT know of its mistake:

To which I got the reply:

I apologize for the mistake in my previous response. Without further information, it is difficult for me to accurately identify the specific Jonathan Fielding you are referring to. There may be multiple individuals with that name who are notable in different fields, such as business, sports, arts, etc. If you could provide additional context or details about the person you are referring to, I would be happy to try and provide a more accurate answer.

So I clarified further:

To which I got the reply:

I apologize for the confusion earlier. Unfortunately, as an…



Jonathan Fielding

Staff Engineer working for @Spendesk, speaker about web things, writing about tech, contributor to open source. If you like what I write make sure to follow.