Re:Signal is finally bringing its secure messaging to the ma...
by interestica on Friday February 14, 2020 @06:42PM
(#22331592)
Ha! True.
Well, a less prolific number may not get all the calls.
I've seen first hand how numbers can be reused fairly quickly (months). (This was in the Caribbean).
A 7 day pin expiry? I need to look at more details here because I can definitely go 7 days without using my phone. Or, I've travelled abroad and used a local SIM while my "home sim" was never in use for the duration of the stay. (But I kept the ID number on whatsapp/signal/telegram).
"Hello? No, this isn't Dave, he got a different number. No I don't know what it is. No this isn't a prank, please stop calling"
As a result I would imagine that unless the network is absolutely clean out of numbers (which they try hard to avoid) it will just never reuse numbers in such a short period. The only way somebody else has the number while the PIN is valid is that they're attacking you, which a PIN blocks.
So my guess would be that this ends up not being a problem in reality, it worried me right up until I read the expiry mechanism and then I went oh, that makes sense.