---
title: "Notes on private AI"
description: "Short pieces on privacy, security and how we build Cognos, the AI chat app that keeps no copy of your conversations we can read."
source: "https://cognos.io/blog"
locale: "en-GB"
---

# Notes on private AI

Short pieces on privacy, security and how we build Cognos - written for people who would rather not become a search result.

- [Your shared AI chat is a public web page](https://cognos.io/blog/shared-ai-chats-are-public-web-pages) - 28 July 2026: Hundreds of people's Claude conversations turned up in Google results this week: medical records, résumés, working API keys. The mechanism behind it is ordinary. What it reveals about where your chat history actually lives is the interesting part.