noun
Refers to information that is classified, secret, or not to be disclosed, often used in business, government, or military contexts.
会社の機密情報を外部に漏らしてはいけない。
You must not leak the company's confidential information to outsiders.
この書類には機密情報が含まれている。
This document contains confidential information.
秘密 is a broader term for 'secret' or 'mystery', while 機密情報 specifically refers to classified or sensitive information, often with formal or official connotations.
Compound of 機密 (きみつ, 'secrecy' or 'classified') and 情報 (じょうほう, 'information').