Notes from a problem set: 'Security by obscurity = shitty'
The image to the left comes from my notes for a Bits problem set. This is my partner's handwriting, although I agree with his sentiment.

I had to brighten the picture using GIMP, so you may want to look at the image's ALT data if you cannot read it. He added "(potentially)" to the end of the statement, but that was cut off my crappy 1.3 MP phonecam.
More information on this topic available at Wikipedia.