1. Jan 11 Encryption and Hacking Encryption turns normal text into nonsense, and changes it back with a key. To someone who is not authorised to view it, this is incomprehensible, but the person or people who are can change it back into normal text which they can understand.

2. Your Answer encrypted unreadable Firewalls Passwords decryption guess recognised secret

3. June 11 Q5 User IDs and passwords A username is used so that there cannot be more than one person with the same identity. A password is used so that unauthorised people cannot access your data.

4. Your Answer

5. Malware Malicious software, otherwise known as malware, is computer programs that are unwelcome or unwanted, or simply just not known about. There are many different types of malware, such as viruses: software that gets into a computer by attaching themselves to files and applications, and can alter, damage or delete files; keyloggers, which track your keystrokes and can gather information such as passwords; and adware, which downloads itself onto your computer and advertises. Install anti-virus/anti-spyware software so that they can help prevent malware. You can get free ones. Block websites that may contain harmful content, such as music download sites.

6. Data Security

7. Never give out personal details such as address. Use a username that cannot be used to identify her. If she’s worried, tell someone straight away and save the chat if possible. If making arrangements with someone, check face to face that it is actually them.