(Salem, OR)  --  The Oregon Employment Department says more than 850-thousand job seekers who have registered with the WorkForce Oregon Management Information System may have been compromised by a security breach.  Officials say so far, there's no evidence that the information that may have been accessed has been used.  However, the department says it wants to make sure it contacts those who have registered with the system.  The Employment Department says it's working with police departments to find out whether any criminal activity has taken place.