The term Crypto primarily refers to two major fields: cryptography (the science of secure communication) and cryptocurrency (digital money), but it also encompasses a surprisingly wide range of other subjects. In the realm of cryptography, it denotes the annual CRYPTO conference, the Crypto++ software library, and the defunct Swiss firm Crypto AG. In the financial world, it is shorthand for digital currencies and the prominent exchange Crypto.com. Beyond technology and finance, "crypto" is also the common nickname for the parasite Cryptosporidium and the intestinal disease it causes, cryptosporidiosis. The term has also made its mark in pop culture, being the title of a 2001 book by Steven Levy, a 2019 crime thriller film, and a character in the video game Apex Legends. Given its broad usage, the word naturally leads to a disambiguation, connecting to related concepts like cryptanalysis, the Crypto Wars, and even the DC superhero Krypto the Superdog.