Cranks does not start, flashing check engine light, security light stays on

Hi, I went to start the car and the immobilizer has kicked in. I had driven it 30 minutes prior then after I stopped the car I clear the interior wiping down everything and think by pushing all random buttons while whipping has triggered it as the ignition was on. The car cranks bit won't start and the security light stays on solid when keys inserted and the engine light flashes.. any help would be most appreciative