假冒 (jiǎ mào): to impersonate; to pose as (someone else); to counterfeit; to palm off (a fake as a genuine)

That swindler impersonated a bank employee, called many elderly people, and cheated them out of their savings.

Police discovered that someone was impersonating this company's name to sell inferior products online, seriously damaging the company's reputation.

He was sentenced to two years in prison and fined for impersonating a police officer.

This website impersonates a well-known shopping platform to trick users into entering their bank card information, and then steals their money.