Malicious Software

4. Software tool used by intruders to secretly get an access to user's computer
5. Program that replicates itself by copying its code to another programs, boot sector or files
6. A network security system that monitors and controls incoming and outgoing network traffic
8. Process of a virus entering a computer or certain areas of a computer or files
11. A type of malware that locks a computer or hijacks a user's files until a ransom is paid
12. A computer program that seems to be harmless, but it does some form of damage
14. A software or hardware tool that records the keys struck on a keyboard
15. Software that installs components on a computer for recording Web surfing habits
16. / Any program or file that is harmful to a computer user
18. A program that is often used to maliciously redirect Internet connections
19. Someone who accesses a computer illegally or without authorisation

1. This is the condition which causes the virus to activate or to release its payload
2. A program or piece of code that finds and takes advantage of a security flaw in an application or system so that cybercriminals can use it for their benefit
3. An attack which targets online users for extraction of their sensitive information such as username, password and credit card information
5. A weakness which allows an attacker to reduce a system's information assurance
7. A self-replicating virus that does not alter files but duplicates itself
9. A method of gaining access to system bypassing the normal procedure
10. A secret method that may be embedded to software to provide unauthorized access to data
13. A term used to classify applications that are being annoying or undesirable but less serious than malware
17. Software that displays advertising banners on Web browsers