I was reading Brian Krebs blog (excellent if you don’t follow it), when this graph struck me. If you only block the most expensive three, you cut your potential losses by 90%. Just something I noticed and thought I would mention because it fits with a post I have been working on about the downside of the business calculus that so many companies make when deciding if they can continue to postpone fixing things.

The graph above is from Brian Krebs blog.