37Data Security and Privacy
3.4 DATA PRIVACY
Data privacy is about protecting sensitive information of individuals. While different denitions of
privacy have been proposed, the most common denition is that a person decided what informa-
tion is to be released about him or her. While data privacy has been studied for decades, especially
with statistical databases, with the advent of the World Wide Web and the efforts on applying data
mining for counter-terrorism applications, there has been increasing interest in this topic during the
past 15 years. Much research has been reported on balancing the need between privacy and security.
The rst effort on privacy-preserving data mining was reported in Agrawal and Srikant (2000).
Several other ...