In this paper an efficient fuzzy c-means (FCM) method has been used for the data sensitivity estimation. For the saturation point estimation variable fuzziness value (FV)-termination criteria (TC) have been used in the cloud computing environment. Data preprocessing has been performed along with the five attributes. Three attributes are based on the cloud user input parameters and the remaining two are the automated attributes which are calculated automatically. Then FCM has been applied. The total clusters calculated by our method are three. Then weighted product model has been applied for the cluster sensitivity calculation based on the three clusters. Our mechanism has the capability to identify the need of high, medium and low-level securities.