Is the following an attack?

• Requested Bit 1: “location = North”;

• Requested Bit 2: “virus X test = positive”;

• Requested Bit 3: “gender = male” AND “muscular sclerosis = present”

• If

• (location = North)  (virus X test = positive)

•  (gender = male) AND (muscular sclerosis = present)

• Then: A3 = A1A2; check-sum bit;

• M = number of possible strings of interest; n = no. of queries

• rate = (log2M)/n = 2/3 i.e., k/n

• Deterministically-related query sequence (DRQS)

Notes: