Cisco has joined Sourcefire in the Iphone App arena. Today I installed their app and it can be found on Itunes at the below link.  It allows you to review Cisco Mitigation Bulletins which are helpful if you use Cisco IPS and other products. It also pulls in news feeds on the latest security events and malware outbreaks. The feature I like the best, but I am not sure how useful it will be on an IPhone, it the ability to enter an IP Address or Domain Name and receive its reputation.

http://itunes.apple.com/us/app/cisco-sio-to-go/id338613740?mt=8

There are some funny videos and other information at the site http://csioiphone.com/