1. A method comprising: comparing each of one or more items of data against a set of one or more pre-configured data sensitivity parameters to detect one or more sensitive data operations that have been carried out by one or more of multiple users within the one or more items of data; generating an alert corresponding to each of the one or more sensitive data operations, wherein the alert provides one or more items of information pertaining to the corresponding sensitive data operation comprising at least a severity measure associated with the corresponding sensitive data operation; and processing the one or more alerts to generate a heat map, wherein said heat map comprises a visualization representing a level of association between each of the multiple users and the one or more sensitive data operations, relative to each of the remaining multiple users, to identify the one or more of the multiple users that have carried out the one or more operations on sensitive data, wherein said association corresponds to a given period of time, and wherein said generating the heat map comprises: aggregating, for each of the multiple users, the severity measure associated with the one or more sensitive data operations; and sorting the aggregated severity measure of each of the multiple users against the aggregated severity measure of each of the remaining multiple users to determine a position of each of the multiple users on the heat map.