不正 ふせい利用 りよう検知 けんちじゃなかったです
fuseiriyōkenchijanakattadesu

Noun
Desu Copula

The polite, past negative form of 不正利用検知

1. Wasn't detecting misuse.; Wasn't identifying improper use.

Past/Perfective
Negative
Polite
Casual Register