To my knowledge it was just a denial of service attack and no wallets were in danger.
No one really knows anything about the supposed pending attack though.
I would not be so sure about that. It is not like Poloniex is a master in security, if you think i'm mistaken just look at Mintpal.
Polo is my favorite exchange...
But they are barely surviving at 200-300 BTC/day volume...
Betting on CryptoNotes just bought them a little time...
And they are desperately adding NXT assets... and anything else with a pulse.
They are probably dead unless they move offshore.
A week long DDos attack would pretty much cripple them...
Except that the MooPal clusterf*ck gives everyone some breathing room for a while.