Malware-O

5. A type of malware that displays unwanted ads on the screens of unfortunate users, typically in pop-ups or "uncloseable" windows.
7. Term for adware that snoops on a computer user's activities without their consent, then reports back to the author about what the user does.
9. This type of computer virus uses unreported errors or bugs in the operating systems of devices on a network, to spread across the network, no user action necessary.
11. A ____ ___ exploit is a vulnerability or security hole in a computer program that is completely unknown to the unsuspecting user(s).
14. A set of commands required to do specific things with a program, stored in an abbreviated form for automatic execution.
15. An _________ is a file sent along with an email message. Computer viruses are notoriously transmitted inside executable file attachments.
16. What the second "D" in "DDoS" stands for.
18. In computers, a _____ is a small piece of malware that copy itself onto other programs or data files when it is executed.
19. Malware that encrypts a victim's files to prevent access, then demands payment to decrypt them.
20. Malicious program that secretly records every keystroke typed by a computer’s owner.

1. Term for a computer added to a botnet.
2. A type of malware that hides on a machine after installation, giving distant attackers unauthorized access to the machine by secret "back door", allowing the machine to be attached to a botnet, and permitting the theft of personal information.
3. Someone who knows a lot about computers and loves to fool around with them.
4. The place on a persistent memory device that holds machine code to be loaded and run when a computer starts up.
6. The use of computers or computer networks to promote a political or social agenda such as free speech, human rights, or freedom of information.
8. An __________ file contains program code for a microprocessor, rather than data for a human user to interpret and appreciate (text, images, music).
10. A group of devices infected by malware given command and control to someone located elsewhere on the net.
12. A program that prevents, detects, and removes viruses or other malware from a computer system.
13. An umbrella term used for various types of harmful or intrusive software--computer viruses, worms, Trojan horses, ransomware, spyware, adware, scamware.
17. Not dangerous. Possibly beneficial.