CompanyXYZ has asked you to assess the security of their perimeter email gateway. From your office in New York, you craft a specially formatted email message and send it across the Internet to an empl

Email masquerading typically refers to a user or process assuming another user's identity within a system, which is a related but broader concept than the specific act of forging SMTP From headers.

Email harvesting is the automated collection of email addresses from various sources for use in spam or targeted attacks, and is unrelated to forging message sender fields.

Email phishing is a social engineering technique that tricks recipients into revealing credentials or clicking malicious links - it may use spoofing as a tactic, but phishing describes the deceptive intent, not the technical forgery of the sender address.

Email spoofing refers to forging the From header of an email message so that it appears to originate from a different, often trusted, address than the actual sender. Because the message was sent from an external New York office but displayed an internal companyxyz.com address and was successfully delivered, the gateway failed to detect or block the spoofed sender address.