  Nowadays, it is a common practice to protect various types of statistical
data before publishing them for different researches. For instance, when
conducting extensive demographic surveys such as national census, the collected
data should be at least depersonalized to guarantee proper level of privacy
preservation. In practice, even more complicated methods of data protection
need to be used. All these methods can be generally divided into two classes.
The first ones aim at providing individual data anonymity, whereas the other
ones are focused on protecting information about a group of respondents. In
this paper, we propose a novel technique of providing group anonymity in
statistical data using singular spectrum analysis (SSA).Also, we apply SSA to
defining hidden patterns in demographic data distribution.

Cryptography and Security