The criminal use of computer systems - Crossword

Clues

1. Not permitted, such as gaining entry to computer material without the owner's consent (12)
2. Software written to damage a system or gain illegal entry to it (7)
3. Breaking into a computer system that belongs to somebody else (7)
4. Program that copies itself and spreads when an infected file is opened (5)
5. Malicious program hidden inside software that appears to be genuine (6)
6. Program that locks a user's files until a payment is demanded (10)
7. Program that secretly records what a user does and reports it back (7)
8. Self copying program that spreads between networked computers without any user action (4)
9. Dishonest crime in which someone is deceived for financial gain (5)
10. Demanding money by threatening to publish private data stolen from a victim (9)
11. Changing computer files or settings without permission, punishable by up to ten years in prison (12)
12. Software that hides itself so an attacker can secretly control a computer system (7)
13. Group of infected computers controlled remotely to launch attacks on other systems (6)
14. Spyware that secretly records what is typed to capture passwords and login details (9)
15. Fake emails that trick a user into revealing passwords or opening malicious files (8)
16. Using another person's personal details to commit crime in their name (13)