Why do your Company Needs Information Security Audit? It is better to assess your weakness than harping on your strength. Not only this rule is applicable to personal development but also to grow a business. If you do not know the security holes and vulnerabilities existing in your system, it will be immensely difficult to save it from virus or maleware attacks. Small, medium or big, every sort of business organisation needs a robust security audit system to find out if its sensitive data are protected or not.