The term CRYPTOGRAPHER'S A is a four letter word, ALFA. ALFA stands for the Association of Language and Forensic Experts, which is an international organization that promotes the use of language and forensic science in the investigation of crime. The organization also provides training and certification for its members in the field of cryptology. Cryptology is the study of codes and ciphers, and cryptographers are experts in the field who specialize in creating and deciphering codes.