Apple iPad Security compromised one day after launch
Professional security testers were able to "get root" on the new iPad one day after it's initial release. This was achieved most likely with a vulnerability in the Safari browser or O/S. There are no exploits in the wild and Apple will most likely release updates to address this issue.
iPad jailbroken in a single day
QUOTE: iPhone Dev-Team member MuscleNerd revealed this afternoon that he has already managed to jailbreak the iPad after just a day of sales. The crack is a variation on the same "Spirit" jailbreak recently used to de-restrict iPhone 3.1.3 and, like the earlier technique, is believed to use a browser-based exploit as part of a trick to get root access and let unsigned apps run on the tablet. It's not yet evident how easily this could be made into an automated process for regular users.
Most jailbreaks to date have used vulnerabilities either in Safari or the OS itself to grant unrestricted access. The combination of the risk to users and Apple's own general discouragement of jailbreaking has led to many of these jailbreaks being rendered inert over time with firmware updates.