"Computer Tech Terms": HTML5 Crossword

Across

2. Unsolicited email messages sent out in bulk. (4)
3. A piece of software that can copy itself and which attaches itself to some other program in order to survive and replicate. (5)
6. The “brains” of the unit and is where programs are run. (9)
9. The main software running on a computer. (9,6)
11. A magnetic storage device. (4,5)
14. A program you use to look at, and navigate between, pages on the World Wide Web. (3,7)
15. The device that connects your computer to the Internet. (5)
16. Interface for the connection of many external hardware devices to your computer. (3,5)
17. The physical components that make up the computer. (8)
18. Blocks traffic that is undesirable in some way. (8)

Down

1. Software service located on remote servers accessed via the Internet (5,7)
2. Programs that run on a computer. (8)
4. Software that secretly monitors computer activity, attempting to gain private information without the computer user knowing. (7)
5. Allows you to connect more than one computer to a modem. (6)
7. A small text file sent to your computer by a website you have visited. (6)
8. Input/output devices that are connected to the computer. (11)
10. To switch a computer off and on again, allowing its operating system and programs to be reloaded. (6)
12. A more permanent storage that holds files even when the computer is switched off. (4,5)
13. The temporary storage used by a computer while it is switched on. (6)