Consider a situation where Joey, a bank employee, frequently uses an application to authorize financial transactions. The application requires you to enter a unique passcode sent through email each time you log in$.$ One day, Joey notices multiple unauthorized transactions from the same account, each using the same passcode they had used for a previous legitimate transaction. Based on this scenario, which data transmission threat is most likely being exploited?

Replay attack

Man$-$in$-$the$-$middle attack

Brute force attack

Eavesdropping