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Not the full contact list, just hashes. That was exactly my point: few people know about this.
by jwr 6y ago
Not the full contact list, just hashes.
That was exactly my point: few people know about this.
- est31 6y agoA hash of the phone number is as good as the phone number itself. Given a list of all phone numbers in use, it's trivial to build a rainbow table for them. And many you can also brute-force.
- CultOfSkaro 6y agoActually Signal is uploading contacts with their first and lastname to the cloud now. Or is planning to do so. Read their blog about that f-ing PIN feature. Its explained there. I hope they don’t go through with it, I absolutely do not wish to use some cloud; not even Signal’s. My data should be 100% local. And that they’re gonna push this without a back-up feature for iOS feels a bit like them raising their middle finger to us.