After several years of thankless work, Google Chrome's Privacy Sandbox is finally coming to fruition. But, despite the inspiring name, Privacy Sandbox is just a targeted advertising scheme that's built into Chrome. While this new user-tracking system is anonymous (and less invasive than the third-party trackers it's replacing), it's obviously very creepy to some people, and it's baked into the Chromium engine. For this reason, Vivaldi is taking steps to block the Topics API, which is the crux of Privacy Sandbox's user-tracking system.