One tracker can't follow you between the sites it sits on, and insecure content shown and healed
A deeper round of protection you can see, all decided and kept on your device. A company that embeds itself inside the pages you visit - the little widgets, the login boxes, the ad slots - is now sealed into its own compartment on each site, so what it stores while riding one site cannot be read while it rides another, and a page can only reach into a piece it embedded when that piece belongs to the same site, never across the boundary. The browser also shows its secure-connection work for the first time: when part of a secure page was requested over an insecure link, you can see what was quietly loaded over a secure connection instead, and for the riskier parts that had to be refused there is now a one-tap way to try loading them securely. And the shield marks itself when it turns something away, so you notice without going looking. The security architecture aspect moves 61 to 64; the overall platform score stays at 70.