IOS 6.1 UPDATE MAKES APPLE I-PHONE INSECURE
If you have an Apple I-phone 4 or newer, think twice before updating to IOS 6.1 especially if you are connected to a corporate network.
It has recently been reported by dailytech.com that the IOS 6.1 lock-screen can easily be bypassed, allowing anyone access to your I-phone’s contacts, voice-mail, and photos in a few simple steps.
http://www.dailytech.com/article.aspx?newsid=29903
Updated March 20th, 2012
Apple has addressed this security flaw in IOS 6.1.3 Update
http://lists.apple.com/archives/security-announce/2013/Mar/msg00004.html