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Just how large is the database?

Computing 30 hashes of each URL means you are sending a fuzzy hash... and 2^(32*30) is fairly precise...

[Disclaimer: I'm the TL of Safe Browsing in Chrome] You can check by going to chrome://safe-browsing/#db-manager

The purpose of my question is that a 4 byte hash is only privacy preserving if there are substantial number of collisions.

Since I’m replying to you, I might as well ask, is Google planning on creating a locally cacheable DNS scheme that includes safe browsing information?

Reply on news.ycombinator.com