Nowadays, use of wireless technology in organizations is a regular act, and we can see this technology erupted in all possible different areas. Related to employing wireless technology those organizations need to apply properly security level, depend on security policy which already defined. If security system applied but not required, or security system required but not provided, leads to improper security system. In this paper we have shown the way to evaluate the data significant and their appropriate security level. Here a model to evaluate the cost of data on security point of view by consideration of some parameters like sensitivity, volume, life, frequency, etc…, this research makes organizations to predict and implement or understand the cost involved for security of their data by measuring the data value. We used questionnaire and survey methodologies to collect the data; and then used SPSS and SAS program to calculate and design a model. In this way regression and BOOTSTARP help us to find accurate result. .