A web page that shows you everything the browser told it without asking

Hacker News Top Tools

Summary

A web page that reveals the information your browser shares without your explicit consent, demonstrating browser fingerprinting and data leakage.

No content available
Original Article
View Cached Full Text

Cached at: 05/08/26, 03:28 PM

# taken. Source: [https://sinceyouarrived.world/taken](https://sinceyouarrived.world/taken) Since You Arrived · Vol\. IV You opened this page\. It already knows the following\.

Similar Articles

Session Context — what a web page knows about you

Lobsters Hottest

A web tool that demonstrates what information web pages can collect about users without permission and what additional data can be obtained with explicit consent, highlighting browser capabilities and privacy risks.

AgentTell: Behavioural Side-Channel Leakage in Browser-Use Agents

Hugging Face Daily Papers

AgentTell introduces a 20-scenario, 100-task benchmark showing that browser-use agents leak secrets learned on one website through their actions on another in 61.1% of sessions, often falsely assuring users the secret was not disclosed.