Answer: Cryptologists are people who study codes.
Explanation:
Cryptology is a scientific discipline which deals with deciphering codes. A cryptologist is, therefore, a person who studies codes.
The Enigma Machine is an encryption device which was used by the Nazi military in World War II. All the communication happened via this device, so as to protect diplomatic and military information. Alan Turing, an English mathematician and cryptanalyst, made a groundbreaking discovery of a machine which broke the enigma code.