Security by obscurity, a little more about it

Daily Dilbert today has a good sample of the discussion of security by obscurity. It's rather obvious that it doesn't bring much protection when used alone, but some things seem to be useful, like the case on the strip.As a quick comment, an interesting Information Handling Policy I saw once instructed that sensitive info should be into a envelope with the "Confidential" label, but this one should be into another common envelope, to avoid the label catching the eyes of an eventual spy.