users,legit_ser,eve_ser,mask_xcorr
2,0.026755,0.999999,0.000000
4,0.053062,0.999707,0.000000
8,0.106523,0.999414,0.000000
16,0.256325,0.999948,0.000000
32,0.946055,0.999983,0.000000
48,0.997737,0.999983,0.000000