Low Strength Self Destruct Passwords
Both Kirk and Scotty have very poor passwords for the self destruct sequence. Even hundreds of years before, I cannot even login to Facebook without upper/lower/numeric/special or 3 of 4 and at least eight characters long. I find it hard to believe that the Enterprise computer will accept the password of 11a2b as the primary destruct sequence password in that day and age.
It seems Checkov has a slightly stronger password. Kirks final code is 0000 as if he forgot to even change it at all.
I'd hate to see what the Enterprise's internal Ip range is like, or what other configurations might be neglected D: