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They need todo this to know which numbers are also using Telegram. Whatsapp does the exact same thing.
by TeeWEE 13y ago
They need todo this to know which numbers are also using Telegram. Whatsapp does the exact same thing.
- ge0rg 13y agoSorry, but this is just a lame excuse. There is no need to upload the personal names for this feature. Also, there are approaches to make number registration lookups more secure, e.g. bloom filters: http://en.wikipedia.org/wiki/Bloom_filter http://en.wikipedia.org/wiki/Bloom_filter I would expect such an approach from a "secure" app.
- utnick 13y agoDon't Bloom filters provide just an illusion of privacy when talking about phone numbers because its easy to iterate through every possible number?
- ge0rg 13y agoI am not quite sure how the dimensioning of the bloom filter affects the false positive probability. Of course it is easy to iterate through many phone numbers, but at least you can not know for sure if a probed number is actually in the filter or just a false positive, giving means of plausible deniability. I did not want to imply that there is a perfect zero-knowledge synchronization mechanism for your contact book.