XCSRF token can be enabled to secure the backend data. 
Once you have
   enabled XCSRF token on the device, the token is extracted after the first GET request triggered
   by the application. This token is retained in the device memory, and is added to all subsequent
   modifying requests.
    
The
    following code illustrates how to enable XCSRF
    token.
 protected SDMConnectivityParameters param = new
        SDMConnectivityParameters();
        //if(Application end point is a Odata UrL) then
        param.enableXsrf(true);