AI Paper Trail Explained: What ChatGPT Knows About You

Proton, the Swiss privacy company behind Proton Mail and Proton VPN, has launched AI Paper Trail, a free tool that analyzes users' exported ChatGPT or Claude conversation data to reveal exactly what mainstream AI assistants have learned about them. The tool, available from Proton's Lumo AI division, generates a personal report with an 'AI Exposure Score,' a privacy-type label, and an estimated dollar value of the user's data — transforming the abstract debate over AI privacy into a concrete, personal reckoning.

Why AI data privacy concerns are intensifying

A single prompt may not reveal much, but weeks or months of casual use can paint a startlingly complete picture. Most popular AI platforms — including ChatGPT, Claude, and Gemini — retain conversations and responses, uploaded files, usage patterns, device and network data such as IP addresses and approximate location, and account details by default.

Under many default settings, this data can be stored indefinitely, used to train AI models, and shared with third parties, often without explicit consent. Behavioral profiles built from what users ask, worry about, and are likely to buy can be worth thousands of dollars to advertisers and data brokers. This is how AI profiling in practice works, and it is precisely why Big Tech AI tools are designed to collect as much data as possible.

What is AI Paper Trail?

AI Paper Trail is a free privacy tool from Lumo, Proton's privacy-first AI assistant, that shows users what mainstream AI may have collected about them through their conversations. It analyzes exported ChatGPT or Claude data and generates a personal report covering four key areas:

• My Privacy Type — a personality label based on the user's approach to data privacy
• My AI Exposure Score — a numerical score based on the number of data points extracted and how much they reveal
• What AI knows about me — inferred personal details such as address, habits, relationships, and identity
• My data value — how much the user's data is worth to the AI provider in real dollar terms

Users can also create a shareable report card to show friends, family, or colleagues what AI companies are really collecting, without exposing personal details. Proton says the uploaded data is deleted as soon as it is analyzed and is never stored on Lumo's servers. 'The only person who sees your report is you,' the company states. Try the tool at AI Paper Trail.

How much does AI know about you?

Even if a user never states something outright, inferences across chats can reveal occupation, sector, and seniority; personal relationships and major life events; age range, education, language, beliefs, and general location; purchasing plans, travel, finances, and health concerns; and daily habits and worries.

How AI Paper Trail works

The process takes three steps:

1. Export your conversation data from ChatGPT or Claude.
2. Go to AI Paper Trail at the Lumo web app.
3. Upload your exported data file to receive a personal breakdown.

AI Paper Trail currently supports ChatGPT and Claude, with support for more platforms planned. The tool arrives as regulators and privacy advocates push for greater transparency around how AI data retention policies affect consumers.

Impact and the privacy-first alternative

The launch of AI Paper Trail is also a strategic move for Proton's Lumo AI, which positions itself as the anti-surveillance alternative to mainstream chatbots. Unlike ChatGPT and Claude, Lumo keeps no logs, protects conversations with zero-access encryption, and never sells data or uses it to train AI models. Wikipedia's Lumo entry notes that TechCrunch reported Lumo 'encrypts all chats, and keeps no logs,' while Tom's Hardware highlighted its 'zero-access encryption system' that prevents even Proton from accessing user content.

For privacy-conscious users, tools like zero-access encryption in AI are becoming a deciding factor. As AI assistants become embedded in daily work and personal life, the question is no longer whether AI knows things about you — but how much, and what you can do about it.

Frequently asked questions about AI Paper Trail

Is my data safe when I use AI Paper Trail?

Yes. Proton states that data shared with Lumo is deleted as soon as it is analyzed and is never stored on Lumo's servers. Only the user sees the report.

Which AI platforms does AI Paper Trail work with?

AI Paper Trail currently works with ChatGPT and Claude, with support for more AI platforms coming soon.

What are the biggest AI privacy concerns?

The main concerns stem from how much data is collected and how it is used — including surveillance, profiling, model training, lack of transparency around retention, data breach risks, and manipulation through targeted advertising and personalized pricing.

Can I share my results without revealing personal details?

Yes. AI Paper Trail lets users generate a shareable report card that highlights what AI companies collect without exposing anything personal.

What does the AI Exposure Score mean?

The score is a numerical rating based on the number of personal data points extracted from a user's chats and how revealing they are — a higher score means AI has learned more about you.