1. A method for providing multi-level data access security, comprising: performing, by a hardware processor, an analysis of hardware and software of a user's computer system in order to mitigate the risk of unauthorized data access; receiving a user's request for data access from an application on the user's computer system, wherein the request contains a query for retrieving data; modifying the user's request for data access for possible risk mitigation based on results of the hardware and software analysis; authenticating a user sending the request for data access and redirecting the request for data access in case of successful authentication; identifying user's clearance level; retrieving query result from data storage based on user's clearance level and user's query; applying access control policies to query result for modifying query result in order to exclude from query result information requiring suppression; and transmitting final query result to the user's computer system.