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A comment on Looking back at how Signal works. Parent comment

Re:Looking back at how Signal works by goatsi on Saturday June 06, 2020 @01:45AM (#23437114)
Signal uses a registration pin to prevent that exact attack.
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Re:Looking back at how Signal works by vinay427 on Saturday June 06, 2020 @02:56AM (#23437358)
Maybe I misread, but the GP doesn't seem to be talking about impersonating a user on Signal, but rather impersonating that user on other websites that depend on SMS 2FA sent to their phone number that is now visible through Signal.
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