When the words “big data” and “security” are used together in a sentence, usually the word “problem” or “concern” is in there too. Security is often thought of as a prohibitor to using big data, since data of all types – including confidential – are being mixed together to generate analytics which can be used for better decision making. But while there are concerns, big data can actually be harnessed to improve security.
The job of the defender is to protect against an infinite number of attacks. However, a defender will always have a limited amount of resources with which to do this. The real job of the security practitioner is to prioritize remediation efforts by risk, so that the limited resources can be focused on addressing the greatest risks to the business.