Earlier this week, we heard from jailbreak developer Pod2G who pointed out an SMS security flaw in iOS, one that has existed since iOS did SMS. The developer has found the flaw in the latest iOS 6 beta, so we’ve yet to see any software related response to the issue. Apple has responded to the security concerns with this official statement given to Engadget.
Apple takes security very seriously. When using iMessage instead of SMS, addresses are verified which protects against these kinds of spoofing attacks. One of the limitations of SMS is that it allows messages to be sent with spoofed addresses to any phone, so we urge customers to be extremely careful if they’re directed to an unknown website or address over SMS.
So they are basically saying iMessage removes all your security concerns. This isn’t particularly practical, considering you’d need to limit your messaging to iPhones. iOS 6 is still in beta, so perhaps this flaw will be corrected before it ships.