While security is being mentioned as one of the strengths, and I certainly agree with that, there was a version of VMS in the late 80s which wouldn't let you cr

While security is being mentioned as one of the strengths, and I certainly agree with that, there was a version of VMS in the late 80s which wouldn't let you create a password if another account already used it. In a small department it wouldn't take more than 15 minutes to hack into someone's account.