Well...this is scary:
A girl mentioned on twitter how she found a random phone in the restroom and was able to access Siri and get the owner's name, address, phone numbers of her friends, and location of her car EVEN WITH A LOCKED SCREEN!
At first it was helpful, then it was freaky.
Marcus tried it and Siri gave up ALL of his info like a total snitch!
Here's how to change your settings and disable this madness...
1. Go to "settings" on your iPhone
2. Go to "Siri"
3. Disable the command "Access When Locked"
And just like that, everything is fine. WHEW!