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It was trying to read certain types of URLs encoded in MD5, found to be these.

https://i.imgur.com/rSOyTt7.jpg

It wants to know what you searched on e-commerce sites.

This is somewhat unsursprising, Tencent failed on e-commerce, it desperately needs these data to help with user profiling.

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Here it is as text: https://www.v2ex.com/t/745030?p=3#r_10077384

According to that post, they don't even upload the URLs that match, but just the fact that there was a match for one of three groups of keywords. Seems like a lot of effort for little information gain...

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