I sent my Macbook into the Apple Store's Genius Bar to be fixed (yay unibody design). They wanted the drive's encryption password so that they could "backup" my

I sent my Macbook into the Apple Store's Genius Bar to be fixed (yay unibody design). They wanted the drive's encryption password so that they could "backup" my data and add it to a new drive if needed. It looked as if they just store this password in the "notes" field. Of course I didn't give it to them, but it pays to be extra paranoid, even about services from companies you think you should trust.