1. Malware and how to defend against it
Tommy Wei

2. What is Malware? FEAR ME! Stands for malicious software It is software
Usually created by computer programmers
Examples of software:

3. Personal Vigilance Being careful and pay attention
Popular way of spreading malware is by
Recognize traps
Ask you to open attachments
Provide passwords or classified information
Try to pose as a friend
Enticing s
Certain websites

4. Disadvantages of Personal Vigilance
Human Error
Business and web security isn’t perfect

5. Antivirus Software Packages
The primary component of technological defenses for every computer
Well designed antivirus software include the following characteristics:
Automatically checks newly downloaded programs for malware
Scans computer periodically
Is regularly updated
Also detect and warn against suspicious websites based on similar technical features

6. Signature Approach (Virus Dictionary)
Examines files and searches for viruses listed in the virus dictionary
Virus dictionary- a predetermined list of current viruses
Is this a virus?
Let me check if its here.

7. Disadvantages Virus dictionary has to be constantly updated
Can be circumvented by encrypting parts of the virus
Changes virus signature
Becomes a polymorphic virus

8. Heuristics Approach (Suspicious behavior)
Hmmm, who are you?
gives your antivirus software some degree of intelligence
Depends on the behavior of the program, deemed suspicious or not
You look okay.

9. Disadvantages No, No. I approve of that!
It can be inaccurate at detecting valid viruses
Make mistakes called “false positives”
Requires manual intervention to fix mistakes