1. Security System Ability of a system to protect information and system resources with respect to confidentiality and integrity.

2. Components of Security System  Confidentiality  Integrity  Authentication

3. Components of Security System  Access Control  Non - repudiation  Availability  Privacy

4. Threats to Computer Security A threat is a potential violation of security.

5. Computer Viruses Worms Trojan Horses

6. Viruses can do the following if unchecked Damage or delete files Slow down the computer Invade your E-Mail program

7. Spyware Compromises your data Alters PC Setting Slow down computer

8. Adware Track yore information just like spyware Display arrays of annoying advertisements Slow down computer

9. Spamming Spam reduces productivity Spasm eats up your time Spam can lead to worse things

10. PC Intrusion Sweeper Attack Denial of Services Password Guessing

11. Phishing It is the criminally fraudulent process of attempting to acquire sensitive information such passwords, credit card details etc.

12. Solutions to Security Threats Active Protection Preventive Measures

13. Active Protection Use Anti – Virus and Anti Spyware software Download updates regularly Run frequent system scans

14. Preventive Measures Keep your system up to date Use caution when downloading files Be careful with E-Mails Disable cookies, if possible