Siri Can Make Calls From a Locked iPhone, But You Can Turn It Off [video]

Weng Chin points out something he describes as a security flaw in the iPhone 4S with Siri. In this video, Chin demonstrates that a user can make phone calls from the iPhone 4S even while it is protected by the iPhone.

This is not a security flaw, and you can turn off this option at any time, by going into Settings > General > Passcode Lock > Siri OFF