Alice, Bob, and Charlie are commonly used names in various examples and scenarios, particularly in computer science and cryptography. They often represent different parties in discussions about secure communication, algorithms, or problem-solving situations. These names help illustrate concepts in a relatable way. In many educational contexts, Alice is typically the sender of a message, Bob is the intended recipient, and Charlie may represent an eavesdropper or an adversary. This framework allows for easier understanding of complex topics like encryption, data security, and network protocols.