The question Break an authentication protocol based on a pre-shared symmetric key was tagged with both cryptography and security.
What is the difference between these tags, and when should each be used?
My stand on it is similar to the distinction between crypto.SE and ITsecurity.SE (which is slightly vague and sometime ambiguous)
cryptography is for more theoretical primitives , algorithms and methods and the their analysis. (e.g, AES, ZK-proofs, signature schemes, etc.)
security is for security in real-world systems and practical questions.(e.g., computer forensics, DDS and network security, etc.)