When the bad guys go after a bank, because of the importance of  information technology it is the responsibility of the Bank’s CIO to  keep the bank’s networks and electronic assets safe. 

However, this is  not something that they can do by themselves. Banks need to know what is happening at other banks so that they can learn from them and better prepare to defend  themselves. 

In order to accomplish this, bank CIOs need to share data  with other banks and this starts to raise some interesting privacy  concerns.