The 14 Dumbest Things In Star Trek II: The Wrath Of Khan
10. Reliant's Weak Password
The prefix code is a good idea for thwarting a hostile takeover of a starship, but a code of only five numbers is in the range of your upper end bicycle combination lock: 90,000 possible combinations.
Have you ever looked at that bank of switches Spock flips to input the code? There are 10 switches, one per number from 1–9 and 0, and each switch stays flipped after he uses it, thus each number can be used only once per code. This means no prefix numbers like 16303 or 01701, let alone 66666. This cuts down the possible combinations by two-thirds to 27,216.
Most public wifi passwords are harder to crack.
Also, after Khan’s been prefix-coded and handed his arse, it’s surprising that Mr, Superior Intellect doesn’t figure out this is what happened and try to locate the Enterprise’s own prefix code in order to turn the tables on his “old friend” Kirk.
But that would mean showing Khan as actually intelligent...not just telling us.