In recent years, the Web industry has been moving towards the abandonment of third-party cookies in favour of more privacy-oriented solutions for targeted online advertising. Among the proposed alternatives, Google's Topics API -- a core component of the Privacy Sandbox framework -- stands above the rest. It is a browser-based solution for providing a user's interested topics to a third-party service (e.g. a digital advertising platform) without revealing the websites they visit. As the initial experimentation phase concludes, all components of the Privacy Sandbox, including the Topics API, have now reached general availability. However, some scepticism remains among other researchers who caution that, despite being a better approach than third-party cookies, this new solution may still lead to re-identification attacks and other privacy leaks.