Who is the father of computer security?a) August Kerckhoffsb) Bob Thomasc) Robertd) Charles

The father of computer security is widely considered to be August Kerckhoffs (option a).

Explanation

August Kerckhoffs was a Dutch cryptographer and one of the pioneers in the field of cryptography. He is best known for Kerckhoffs's principle, which states that a cryptographic system should be secure even if everything about the system, except for the key, is public knowledge. This principle laid the foundation for modern cryptographic practices and is critical in the study and application of computer security.

In contrast, the other candidates do not have the same level of recognition or contribution to the field of computer security as Kerckhoffs. Bob Thomas contributed to computer networking, while Robert and Charles do not have significant claims to computer security.