Is Privacy Sandbox’s Federated Learning of Cohorts leaking information about web browsing history? Let's find out. Federated Learning of Cohorts is computing a SimHash on a user's web browsing history (the lists of visited websites) to obtain the cohort ID. In principle, it is a lossy computation: when only…
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Digital web advertising is an ecosystem undergoing strategic changes. Google’s Privacy Sandbox is promising to redesign web advertising technology in ways that will respect user’s privacy, including based on some previous designs. Detailed technically-enabled analysis should wait until more design features are known. In this post I focus…
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This post describes some of the technologies that are or may be used, as well as the ideas of improving the privacy stance of such a certificate/passports technology. Treat it as a standardisation and food-for-thoughts consideration, with a view towards privacy-preserving Covid19 health certificates or ‘passports’. It seems that…
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We may be in the middle of a process of redesigning how the web economy functions. Considerations include web advertisements. Such works involve many actors. Some big platforms. Some web browser vendors. Some ads companies, with a modest list of analysts or researchers keeping a close eye. I believe it’…
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IPv6 is a big enough topic that any short writing obviously cannot account for all the issues. But it’s important to realize that at its core, the IP version 6 (which was/is supposed to replace IPv4 at some point) is modern technology at its core from the ‘90s…
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