Messages that change an object's state are called ____________________.

A __________ is a separate file from the user IDs where hashed passwords are kept.

Fill in the blank(s) with the appropriate word(s).

________ is the use of the Internet, smartphones, or other devices to send or post content intended to hurt or embarrass another person.

A. Identity theft B. Trojan horse attack C. Zombie apocalypse D. Cyberbullying