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<blockquote data-quote="Fabian Wosar" data-source="post: 785915" data-attributes="member: 24327"><p>Our URL database is multiple GB in size. It's unfortunately not feasible to have such a huge database deployed on our user's systems. So instead those hashes allow us to determine which bits of the database are relevant to you at the moment and only stream those to your browser, which can then determine whether or not the website you visit right now is bad or not.</p><p></p><p>So if you do visit a malicious website, we may be able to guess, because you query certain bits of our dataset that are specific to a certain malicious site. But we don't know for sure as hashes aren't unique and each hash has a potentially unlimited number of payloads that can have the same hash. For non-malicious websites, we will have absolutely no idea what you visit at all. All we see for those are some hashes, that don't lead to any data in our datasets.</p></blockquote><p></p>
[QUOTE="Fabian Wosar, post: 785915, member: 24327"] Our URL database is multiple GB in size. It's unfortunately not feasible to have such a huge database deployed on our user's systems. So instead those hashes allow us to determine which bits of the database are relevant to you at the moment and only stream those to your browser, which can then determine whether or not the website you visit right now is bad or not. So if you do visit a malicious website, we may be able to guess, because you query certain bits of our dataset that are specific to a certain malicious site. But we don't know for sure as hashes aren't unique and each hash has a potentially unlimited number of payloads that can have the same hash. For non-malicious websites, we will have absolutely no idea what you visit at all. All we see for those are some hashes, that don't lead to any data in our datasets. [/QUOTE]
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