just reading you comment about differing packets, I was already thinking that seems like a dumb thing to have look different. Then you end with exactly that. Just goes to so that the world is so insecure that even minimal effort will get quite a return in this world. If it gets a big enough return so that even those that do stop it still makes it worth while, then why spend energy trying to do more. Hell, even Bill Gates is attributed to saying something about why should he pay for optimizing when disk space and cpu is always increasing faster than any optimizations could.