Re: Cleanup: I'll attack some coins - I owned APEXcoin for 90 blocks
So, found any holes the Nxt devs missed in their implementation? 
I think so... but as I said, I need some time to implement the attack and completely understand the implications... attacking still requires a lot of stake, looking how to improve that...
Which is why borrowing state becomes an option for someone wishing to attack a POS coin. That is the essence of the "Second Pirate Savings and Trust" attack.