There seem to be two separate but related issues here, and I don't see how the headline could be true.<p>AFAICT, Brave is striving to mediate access to websites that attempt to connect to network services running on 127.0.0.1. I would've hoped that they take this further to prevent connections across the user's LAN to RFC1918 addresses (or to whatever addresses are being used on the LAN).<p>I do not see a feasible way that a mere web browser running on a client machine could prevent port scans against anything. Not the host computer nor the edge router. That's simply beyond the scope of a web browser. I don't know why Ars Technica chose such a misleading headline. However, I'm glad that they brought to light this reprehensible practice of public web sites, including bestbuy.com, where I recently made a major purchase, yet I was completely unable to create a user account there. Now I want nothing to do with them.