Re:There is a WhatsApp 'backdoor'
by ycmbntrthrwaway on Sunday January 15, 2017 @03:04PM
(#13406061)
> Random time later send garbage
Random is bad because you need some random distribution and by gathering statistics server can determine if your distribution of delays match. Delay until really clicking the button would be highly individual. That is why I said "when they open the application".
Re:There is a WhatsApp 'backdoor'
by FabHK on Sunday January 15, 2017 @05:32PM
(#13406759)
True, if you did this, you'd want to either match the (empirical) distribution, or, as I believe you are suggesting, just pretend the (non-existing) button was pressed shortly after the user opens the app next time.
Random is bad because you need some random distribution and by gathering statistics server can determine if your distribution of delays match. Delay until really clicking the button would be highly individual. That is why I said "when they open the application".