What is your browser open to?
Press the button and this page looks at the browser you are using right now and tells you what it is open to, with plain fixes for your exact browser. It takes about fifteen seconds.
Why browsers come set this way
A browser is set up so that the most pages work for the most people. Notifications, pop-ups on a click, downloads the browser only half trusts, pages without encryption, full screen on request: each one is open because something ordinary needs it, such as web mail, a bank's sign-in window, a small company's installer or a video. Scam pages use the same openings. The browser makers know this, and some of them earn their money from the ads and tracking that a tighter setting would block, so they leave the stronger setting as a switch for you to find rather than the way the browser arrives.
You don't have to accept that trade. The switches are already in your browser and cost nothing. This page shows which ones are open in the browser you are using, what each one stops, what it might get in the way of, and how to put it back. You choose. Under each result, Understand this setting has the full story.
What this page can't do is reach the rest of the computer: the programs that connect out, the remote-control session a scam caller asks for, the other browsers on the same machine. That is where DataStun takes over, on a computer with it installed.
What this page will do, before it does it
When it finishes, we keep an anonymous record of the result on our server: which checks passed, which ones you ask to have fixed, your browser and system, and your country. Never your address. This browser keeps a random number so a later checkup can be compared with this one. If you ask, DataStun e-mails you the report; nothing is sent unless you type your address and press Send. The test code is public.
It will not ask for any permission, download a file, or load anything from a third party. One check opens a small blank window of our own and closes it at once, to see whether pop-ups get through. Results are worked out inside your browser, and we never store your address.
One more, on its own button: