Answers
One that is at least eight characters long and mixes upper and lower case letters, numbers and symbols.
The process of checking that someone is who they claim to be before they can use a system.
Blocking a login after a set number of failed attempts, so an attacker only gets a few guesses.
Locks, guards, cameras and other measures that stop intruders reaching, damaging or taking the hardware.
A secret string of characters known only to the account owner, used to gain entry to a system.
Giving each person only the permissions they need to read, write or delete specific files and programs.