In this talk, I will introduce the concept of Secure Computation, which encompasses all cryptographic methods of enabling computation while keeping data secret (Secure Multi-Party Computation, Homomorphic Encryption, etc.). Through extensive development from a theoretical curiosity in the late 1970s, Secure Computation is now at the stage of improving practicality and developing applications to diverse use-cases. I will demonstrate how Secure Computation can bring innovations in data privacy.