this post was submitted on 06 Oct 2024
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Privacy
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A place to discuss privacy and freedom in the digital world.
Privacy has become a very important issue in modern society, with companies and governments constantly abusing their power, more and more people are waking up to the importance of digital privacy.
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Because you can't have privacy if a company asks for your phone number.
Depends, who do you want to shield what information from? Signal knows all of their users’ phone numbers. You can hide it from other Signal users. All depends on your threat model.
Only the hash of your phone number.
How exactly is it hashed? There aren't that many possible phone numbers, so it might be viable to just try every valid number until you find one that matches
Here's what Signal says: https://signal.org/blog/contact-discovery/