Goals of security
! We need to know what we mean when we say the system is
‘secure’
! There are three important aspects (CIA)
! Confidentiality
! Ensure that computer-related assets are accessed only
by authorised parties.
! Sometimes is called secrecy or privacy
! Integrity
! Assets should be modified only by authorised parties or
only in authorised ways.
! Include writing, changing, deleting and creating.
! Availability
! Assets are accessible to authorised parties at appropriate
times