Doesn't look good for Apple right now security wise, but as stated before, Apple is prone to the same kind of security breaches as any other platform - it's just that hackers usually go after the number of users and usually most victims.
A security breach has exposed iPad owners including dozens of CEOs, military officials, and top politicians. They—and every other buyer of the cellular-enabled tablet—could be vulnerable to spam marketing and malicious hacking.
It doesn't stop there. According to the data we were given by the web security group that exploited vulnerabilities on the AT&T network, we believe 114,000 user accounts have been compromised, although it's possible that confidential information about every iPad 3G owner in the U.S. has been exposed.