Setting a passcode on your iPhone is the first line of defense to help prevent other people from accessing your personal details. However, it's pretty much easy for anyone with access to your iPhone to bypass the passcode protection (doesn't matter if you configured Touch ID or not) and access your personal photos and messages. A new critical security flaw discovered in iOS 8 and newer, including 10.2 beta 3, allows anyone to bypass iPhone's passcode and gain access to personal information using the benevolent nature of Apple's personal assistant Siri. The security glitch has been discovered by EverythingApplePro and iDeviceHelps and now that they have gone public with a video demonstration, you can expect Apple to fix this issue in the next iOS beta version. All an attacker need is to find out the phone number of the target's iPhone and access to the phone for a few minutes. But, what if you don't have target's phone number