I was debugging a config file of my personal project and pasted it straight into Claude to get help. A few seconds later I looked at what I had actually sent: internal IP addresses, a database password, and an API key. All of it.
Source: [Dev.to](https://dev.to/shubhamdevops/i-built-a-privacy-layer-for-ai-coding-tools-codemask-ui-and-codemask-proxy-3ne6)