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What happens if it is a hit against the bloom filter / checksum? Would it transmit the URL so that it can be blocklisted?
by ehsankia 6y ago
What happens if it is a hit against the bloom filter / checksum? Would it transmit the URL so that it can be blocklisted?
- kevincox 6y agohttps://developers.google.com/safe-browsing/v4/update-api#checking-urls https://developers.google.com/safe-browsing/v4/update-api#ch... TL;DR is you download a chunk of SHA-256 hashes and check if the hash for your URL is there. There is of course the chance of collision but that is minuscule.
- ehsankia 6y agoOh I know that's how that works, I meant, does Google transmit back the URLs once it does get a hit, to protect others from downloading that file?
- vinay_ys 6y agoWhy would it need to do that? To protect others from the same url, the same hash checking method should work.
- monsieurbanana 6y agoThe blacklisted URL in this case is found in a downloaded file from a S3 bucket. Other people downloading the same file would get the same "protection", but in this case this goes a step further: The S3 bucket itself gets then blacklisted. As it was a private bucket, one of the ways this could happen is that once chrome found the blacklisted URL, it sent back to Google the url (s3 bucket) where the file with the blacklisted URL was found.