The 39th Symposium on Cryptography and Information Security (SCIS2022) was held at Grand Cube Osaka (Osaka International Convention Center) from January 18 (Tuesday) to 21 (Friday), 2022. SCIS2022 had more than 947 participants, and the section themes were "Quantum Resistant Computer Cryptography," "Public Key Cryptography," "AI Security," "Cryptography Theory," "System Security," "Network Security," "Automotive Security," "Plumbacy Protection," and "Security for Automobiles. Plumbacy Protection, Biometrics, Side-Channel Attacks, Hardware Security, Web Security, Blockchain, Cryptographic Protocols, Secret Computation, Education and Psychology, Quantum Cryptography, Common Key Cryptography, Privacy Protection, and Physical Cryptography," "Security Assessment," and "Content Protection." (