Actually it doesn't need the properties of a cannonball missile at all, all thats needed is to copy, rename, reprice and then alter the damages of one of the existing EMP missiles.
Though to be honest the refire rate, range and turn rate of both non-homing and EMP missiles are identical.
And tank, the hacker weapons are the same types as the outcasts use.
Why else would the hacker guard fly sabres with identical loadouts as the outcast guard?