AI chatbots reveal private info, exposing real numbers despite privacy guardrails. Training data with Federal Records Information Act requests and city property documents expose sensitive info. Students tested ChatGPT's ability to surface home addresses after 'narrowing down'. Journalist found chatbots identifying his personal number. OpenAI rep declined to comment, while xAI did not respond. Experts note no way to compel models to remove Personally Identifiable Information. Privacy norms shifted from open phone books to guarded secrets, making the issue fundamental