As far as I know, it would take more than 10 years to find a private key to the address, so you can not worry about it. Thus, it is very difficult to crack the address.
no, it is not "difficult to crack" a bitcoin address, it is
impossible to do so.
as for 10 years, if you mean going in reverse from address to private key then again it is impossible. it will take until the end of universe to do that not 10 years!