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RedNote is exposing users' mobile numbers
RedNote exposes its users' mobile numbers.
A phone number isn't a detail. In China it's the key to everything else.
Registration, verification, identity — the +86 is the thread that ties an account to a person and a person to every other account they hold. A platform leaking it isn't leaking a field. It's leaking the join.
Turning that into an actual capability — finding anyone, for your requirements — is what the advanced and master programs are for.