As cool as it is to have a talking phone, Siri's features can often allow unwanted guests into your phone.
Especially with this new hack that is destroying our souls a lil bit.
Summoning Siri when the phone is LOCKED limits some of her actions - but not all of them. Users can still dictate messages to any contact, make calls and even update Facebook statuses.
Don't worry, there's a way to disable this feature thank GOD.
Open the Settings menu, scroll down to Siri and switch off the 'Access on Lock Screen'. Wallah - your phone is mostly safe.