You will suffer if crackers see the code

As we said, crackers do fine without the source code

What is the solution to counteracting crackers?

Let the good guys see the code

Peer review solves many, many problems before they hatch

"Enlightened Self-interest" is at its peak when you are bitten

Existing holes get closed fast

Effects of opening the code

Number of crackers remains relatively flat

Number of fixers increases by multiple orders of magnitude

Open Source is a "win" for the Security-minded