Posing as Visa Bank, Walt e$-$mails Paula, asking her to update her credit$-$card information through a link in the e$-$mail. clicks on the link and types in the data, which Walt promptly sells to O$"$Hara$.$ This is

Select one:

a$.$ employment fraud.

b$.$ cyberterrorism.

c$.$ hacking.

d$.$ phishing.