How Many iTunes Accounts Were Compromised?

Not many. Clayton Morris reports:

Apple told me that an extremely small percentage of users, about  400 of the 150 million iTunes users — that is less than 0.0003% of iTunes users, were impacted.  

To the question of whether the iTunes servers themselves were ever in any danger of hackery Apple told me that the iTunes servers were not compromised in any way.  

★ Tuesday, 6 July 2010