Pierre received an urgent email appearing to come from his boss asking him to respond quickly to the email with the company credit card

This is a Phishing email

Explanation:

Pierre has received a phishing email from a certain scammer. These kinds of emails are an attempt from the scammer to fool the receivers like in this case Pierre and get the personal and financial information that they can use to steal the money from their account. It's hence, a fraudulent attempt to steal the money from the account of a certain person like here it is Pierre.