Security staff stopped an impostor who claimed to be a technician from our vendor.

保全人員攔下一名自稱是我們廠商技術人員的冒名者。

The bank warned customers that an impostor was sending emails pretending to be support staff.

銀行警告客戶，有冒充客服人員的騙子正在寄送電子郵件。

During the background check, HR discovered the candidate was an impostor with fake degrees.

在背景調查時，人資部發現該應徵者是持有假學歷的冒牌貨。