Saito File: The Chair

Field notes

The first exercise places a reader in the chair of an employee facing a video call with a supposedly familiar CFO and fifteen transfer instructions. It supplies three responses, including calling a previously known number, then frames the central question as who opened the door through which the verification request arrived. The project says each file pairs a mechanism with a falsifier, while its paid Red File adds written exercises, technique files, and an archive in both English and Japanese.