名詞 disinformation:

1. misinformation that is deliberately disseminated in order to influence or confuse rivals (foreign enemies or business competitors etc.)

dis.in.for.ma.tion

n.（名詞）
Deliberately misleading information announced publicly or leaked by a government or especially by an intelligence agency in order to influence public opinion or the government in another nation:
假情報，假消息：由政府、尤其是情報機關公開宣布的或誘露的有意迷惑人的情報，意在影響他國的大眾輿論或政府：
例句：
.He would be the unconscious channel for a piece of disinformation aimed at another country`s intelligence service.(Ken Follett)
.他會在無意中成為向另一國情報機構提供假消息的渠道.(肯·福利特)

Dissemination of such misleading information.
假情報、假消息的傳播
n.attributive.（定語名詞）
Often used to modify another noun:
常用來修飾另一個名詞：
例句：
disinformation operations; disinformation experts.
制造假情報的活動；假情報專家

來源：
Possibly translation of Russian dezinformatsiya
可能為 俄語 dezinformatsiya的翻譯