1.4 Network Security

2. Malware that encrypts files and demands payment for decryption.
7. A self-replicating malware that spreads itself across networks, without user action.
8. Observing someone's action, such as watching them enter their password.
9. A type of malware that secretly monitors a user.
10. Software or hardware that filters and blocks unauthorised access to a network.
11. Unauthorised access of data as it is being transmitted over a network.
15. A form of social engineering that involves maintaining a conversation.
16. Should be at least 8 characters long with upper and lowercase letters.
17. A form of testing designed to find any weaknesses in a system.
18. A technique that exploits vulnerabilities in databases by injecting malicious code.

1. Attempting to guess passwords by trying every possible combination.
3. Manipulating people into sharing sensitive/confidential information.
4. Overloading a network or website with traffic to make it unavailable.
5. Permissions assigned to a user defining what resources they can access.
6. The process of scrambling data so it can only be read by authorised users.
12. A malicious program that disguises itself as legitimate software.
13. A term for malicious software.
14. A malicious program that replicates itself and attaches itself to files.
17. A form of social engineering that involves tricking people into sharing information through fake emails or websites.