A Chrome extension -> check this Wiki
Disable some JavaScript methods (i.e. window.eval) and properties accesses ( i.e. cookie read/write). Attempts to Safe login and registration by blocking external requests. Gives feedback to user about page's attempts to execute document.cookie and window.eval.
- Blocks pop-under like http://popunderjs.com/
Load and test the extension:
- Visit chrome://extensions in your browser.
- Ensure that the Developer mode checkbox in the top right-hand corner is checked.
- Click Load unpacked extension… to pop up a file-selection dialog.
- Navigate to the directory in which your extension files live, and select it.
- Enable the extension.
In chrome://extensions is possible to open the console page for the background script.