Which of the following is a data transmission threat? Select all that apply.

An external entity pretended to be the CEO of a business organization and asked you to submit a resignation letter immediately.

Data was being uploaded to a backup server. An external entity intercepted the transfer process and captured the data.

An external entity accessed the company database and exfiltrated it$.$

Data was accessed and changed without proper authorization by an unknown external entity while sending as an email attachment.