[quote=@Host]
<Snipped quote by Extra>

That... that's Rhythm's attack. Nobody else should be able to use it. 
[/quote]

You said that the more advanced version of that cylinder of yours is for data restoration. And then there was that program that was sort of like your Double Soul one.
-Anna- Maybe White managed to get the knowledge and skill of the attack from Rhythm. Or maybe something worse. But we can't know until we find her.