Overview

• Authorities obtained encrypted phone server records from the Presidential Security Service (PSS) through voluntary submission on May 23, 2025.
• The records include logs of encrypted calls and text messages between former President Yoon Suk Yeol and Deputy Chief Kim Sung-hoon.
• Encrypted and work phones used by Yoon and his aides were also seized or voluntarily submitted to investigators.
• Earlier forensic collaboration between police and the PSS successfully recovered substantial portions of encrypted server data.
• The investigation focuses on whether Yoon and senior officials obstructed justice following his December 2024 martial law declaration.