Colorado learned on Friday that it is one of 21 states that hackers targeted last year -- right before the election.

The Department of Homeland Security said Colorado's systems were scanned - but not breached.

The Colorado Secretary of State's Office had a good analogy: A scan of the system is kind of like a burglar jiggling the doors of a house - but not getting inside - because the doors are locked.

Other states include Alabama - Illinois - Maryland - Virginia - Washington and Wisconsin.