The problem I suspect, with only slightly altered bomb recipes, is that you leave room for experimentation. A potential terrorist could try and work out how to

The problem I suspect, with only slightly altered bomb recipes, is that you leave room for experimentation. A potential terrorist could try and work out how to correctly concoct a bomb after your supplied recipe has failed, he might even succeed. Also, explosives by their very nature are unstable and providing a recipe slightly wrong could lead to premature explosion: 'Great!' you might think 'One less terrorist!' but terrorists don't often operate in seclusion, they operate in residential areas (look at the London 7/7 bombers, for instance). Meaning innocent people could be injured by their bomb making. The deliberately bad computer security advice would seem a better idea, like 'Download the official Al Qaeda security suite! That only COINCIDENTALLY sends all your personal information and location to the security services!'.