Online security Hardly a week seem

Hardly a week seems to go by without media reports of another computer system being hacked for financial gain, to cause disruption or just to show it is possible.
Your task is FIRSTLY to identify the common ways hackers use to gain access to systems and SECONDLY to analyse and evaluate the methods and systems that are being used to block the attacks and defend the systems.
Marking Criteria
.2.1: In order to achieve a 2:1 grade, your essay should locate those attack and defence strategies within the broader context of information syhstems management strategies.
Your essay should be clearly structured and written and make use of a range of appropriate references which you approach critically.