Ordinary users browsing and viewing attributes and values

Can someone help me figure out why other ordinary users who are logged on have the ability of browsing and viewing the attributes together with their values yet I have configured the permissions on the attributes. Please consider that I have an object class and within this class there are also three other optional attributes. I have gone to several websites in search of a solution but I am yet to find something relevant. If anyone knows a solution to this problem, please help.
