Request trend 1000 ~= 500 2000 <~ 1.0k 5000 ~= 1.5k : 2.0k 10000 <= 2.5k 20000 ~= 4.0k 40000 >= 5.0k 50000 >= 13.0k 100000 >= 15.0k Attack Risk 5k => High 2.5k => Medium 1k => Low