Not wanting to derail the thread, but PrimeDice does not use deposit addresses for betting. It has a client seed which the player can change any time, a server seed which is publicly displayed before the bet and a daily secret. It is provably fair and it is faster than SD. The 3 non-blockchain based dice sites are all faster than SD. But it's method or implementation of it's provably fair system was questioned. It's the player's fault if they don't bother setting the client seed.

On just-dice, you can click randomize and not bother to set the client seed, or create an account and not bother to set the client seed. They are randomly set, but as the player, it is your responsibility to change it before you click on OK or NEXT or whatever. Or accept what you see.

As for the poor dude who claims to have lost his bitcoins or his phone compromised, that's his fault.