The latest information on how Wired writer Mat Honan's iCloud and Twitter accounts were hacked is found here at AppleInsider. Son, Peter, sends this link to Wired. Be sure to read this.
See the earlier posts about this hacking, "Apple's Fault" on 8-5, and "Hacking Incident Warns Us About Passwords" on 8-4, and how Amazon and Apple security measures were factors that caused this mayhem.