The threat of an aviation industry cyber attack is very real. The majority of attacks have been carried out with criminal intent often through the use of malicious software via social media or personal email. Fortunately, however, there has not been any large scale attack that has significantly impacted on the functionality of airports or on airlines. Evidently that could change. In all probability, airports and airlines will become increasingly vulnerable from cyber attacks due to the fact that there is increasing reliance on expanding IT network systems. As a result we would expect that the aviation industry will see the adoption of numerous measures.