GCSE ICT

1. GCSE ICT Viruses, Security & Hacking

2. GCSE ICT - Viruses • Introduction to Viruses – what is a virus? • Computer virus definition - Malicious code of computer programming • How do they work • Designed to install, propagate & cause damage • Work on the memory of a system • 2 points of invasion – Disk drives / Network adapter • cards

3. Virus GCSE ICT - Viruses How a virus spreads:

4. GCSE ICT - Viruses • Preventative measures • Anti-Virus software to scan files • - must be regularly updated • Firewall software • -stops malicious programs being sent through networks • -prevents unauthorised access (hacking)over the internet • Backups (regular). • Damage Caused • Home computers • Major organisations • At worst, a total loss of data!

5. GCSE ICT – Viruses (Recap) • What is a computer virus? • Malicious code of computer programming • At what 2 points can a virus enter a computer system? • Disk drives (i.e. floppy disk, CD) • Network adapter card (over the internet, via e-mail, etc) • Name two ways that will help prevent viruses • Up-to-date Anti-virus software • Firewalls

6. GCSE ICT - Security • Introduction to Security • Methods of protecting data • Up-to-date anti-virus software • Passwords/Log-ons • Backups • Stored away from the computer (tape, CD, • removable hard-drives, off-site Web-based server) • Web-based servers - Advantages • Back-up data less likely to be “Lost” • Can upload information at any time • Backup data can be easily be downloaded

7. GCSE ICT - Security • Web-based servers - Disadvantages • May not be as secure • Connection must be fast and reliable • Fire/theft may cause upload/security information to be • lost • Keep information secure • Prevent viruses • - up-to-date anti-virus software • - scan files at regular intervals • - scan all new files

8. GCSE ICT - Security • Keep information secure (continued…) • Prevent unauthorised access • - keep passwords CONFIDENTIAL! • - choose random passwords • - physical security (lock doors, etc) • - secure & protect sensitive information

9. GCSE ICT – Security (Recap) • What kind of information should be kept confidential? • Name 3 ways of protecting electronic data • Anti-virus software • Passwords/Log-ons • Keeping regular back-ups • Discuss the advantages and disadvantages of Web-based servers… • What ways can you prevent unauthorised access? • Keep passwords CONFIDENTIAL! • Choose random passwords • Physical security (lock doors, etc) • Secure & protect sensitive information

10. GCSE ICT – Hacking • Hacking • Gaining unauthorised access to a computer, electronic • information or network by breaking codes and • passwords to gain unauthorised entry to computer • systems. • Hackers can do an enormous amount of damage • Stand-alone computers are usually safe • Computers which form part of networks are in danger • from hackers.

11. GCSE ICT – Hacking • Hacking (continued) • Many hackers may or may not have no fraudulent intent • Often carried out by corrupt employees or employees with a grudge • The extent of hacking is difficult to assess, much of it is only discovered by accident.

12. GCSE ICT Tasks: • Complete ‘hackers and viruses’ handout • Continue your own investigations into viruses, security & hacking on the Internet • www.bbc.co.uk/schools/gcsebitesize/ict/ • http://computer.howstuffworks.com/virus.htm • http://www.edexcel.org.uk/VirtualContent/50320/3e_Legislation.pdf • http://www.teach-ict.com/gcse/theory/crime/hacking/www.cnn.com/TECH/specials/hackers/primer/index.html • http://www.school-resources.co.uk/hackers_for_schoolresourcescouk.htm • http://www.teach-ict.com/gcse/theory/crime/hacking/hacking/index.htm Make any additional notes.