Humanity has concerned itself with the topic of cryptology for three thousand years. However, until the mid-20th century it was a topic of importance to only a small interested group -- diplomats and the armed forces. In any military conflict, exchange of confidential information and eavesdropping is crucial for survival. Due to the sensitive subject matter the vast majority of crypto research was done in secrecy in the past.
When we talk about awareness, or security awareness, we usually mean the consciousness for general concerns of information security. Hence, awareness is not only about cryptology, e.g. the encryption of confidential data, but also about a much broader topic. The following figure aims to illustrate this fact: