Task 12. Complete these sentences by using a term from the text. Then write the words in the puzzle

Users have to enter a p … to gain access to a network.

1. You can download a lot of f … or public domain programs from the net.

2. Hundreds of h … break into computer systems every year.

3. A computer v … can infect your files and corrupt your hard disk.

4. The process of encoding data so that unauthorized users can't read the data is known as e ….

5. A f … is a device which allows limited access to an internal network from the Internet.

6. You can include an a … as part of your e-mail message.

7. This company uses d … techniques to decode (or decipher) secret data.