Critical bug disclosure

Few days ago the guy who found a vulnerability in Blockchain.Info and picked the secret phrase of Nxt genesis account found a security flaw in NRS cryptographic algorithm. The flaw allowed to replay transactions that would lead to double-triple-etc amounts sent. In fact, by finding this flaw he conducted an audit of Crypto class and won the bounty that we collected specially for such a case.

I can't explain details of the flaw, coz it's out of my area of expertise. U can contact him directly via nextcoin.org forum.

The flaw has been fixed and all who updated to 0.6.0+ are safe now. Users of older versions are safe too as long as they are connected to nodes with 0.6.0+.

PS: The community should collect 10 BTC again coz we still need to do the audit of the code.