Actually, I want to know how to attack the bitcoin address.
Get an address with a high amount of bitcoin in it. How can a hacker attack this address? There is no other information. There's only address information and bitcoin amount.
This is actually very easy.
1) buy a pretty good quality computer. Best if fully dedicated and separate from your normal computer.
2) download and install Vanitygen
3) 64 vanitygen64 (64 is faster and works better than normal vanitygen)
4) start scan on the address like this at the command line: vanitygen64 1FuckYouc6zrtHbnqcHdhrSVhcxgpJgfds
It will take some time for sure. But soon you will have the key for that address.
Don't let the morons around here tell you it is impossible. That is just plain wrong. It is scientifically provable that this works. Dumbasses who don't understand statistics love declaring this impossible. Vanitygen guesses millions of times per second. With enough seconds, it is not impossible.
while this is entirely possible.. and i do believe you about the someday someone somewhere will generate an address collision by accident.. but when this happens that address will most likely have zero coins in it because of the way the new wallets sweep the address when you spend and send change to a new one.
but it is so highly improbable that you will never be able to do it on purpose on a certain address.. ever.. not even once.