Return to the PC Security web page Lesson 5: Dealing with Malware
Lesson Objectives In this lesson, you will: Identify different categories of malware Describe the damage caused by malware Prevent malware infections Remove malware infections Use System Restore 2
Defining Malware – Types Viruses Worms Trojan horses Toolbars Spyware Adware Homepage hijackers Dialers Keystroke loggers 3
4 Understanding Infections Payload = damage Payloads vary Severe payloads may result in: Permanent file deletion Crashes Identity theft
5 Understanding Infections Becoming infected Via Downloading infected files Visiting a web page on an infected web server Drive-by downloads
6 Preventing Infection Keep Windows current Tighten Internet Explorer’s security settings Run antivirus and antispyware software Practice common sense
7 Preventing Infection Antivirus software Maintain updated virus definitions To identify virus signatures Install only one Use one that supports heuristic scanning Antispyware software Windows Defender
Removing Infections Virus scans Spyware scans Microsoft Malicious Software Removal Tool 8
Removing Infections Not all computer problems are caused by malware System Restore Create restore points Restore a computer to an earlier time Must be an administrator 9
Return to the PC Security web page Lesson 5: Dealing with Malware