Who used cryptology?

Have you ever wondered who exactly utilized cryptology in the past and present? Cryptology, the study of both cryptography and cryptanalysis, has a rich history dating back centuries. It has been employed by various individuals and entities, from ancient civilizations to modern governments, businesses, and even individuals. For instance, during World War II, both the Allies and Axis powers extensively used cryptography to protect their communications and cryptanalysis to decrypt enemy messages. Today, cryptology is ubiquitous in the digital age, with its applications ranging from ensuring secure online transactions and protecting sensitive data to facilitating the privacy of individuals in their digital lives. But the question remains, who exactly are the users of cryptology today? Governments use it to safeguard national security, businesses to protect their intellectual property and customer data, and individuals to maintain privacy and security in their digital lives. So, who do you think are the primary users of cryptology, and how do they utilize it in their respective fields?