Yipee Ki Yay

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Yipee Ki Yay
http//www.imdb.com/title/tt0048960/

• Bruce Willis in Die Hard (1988)

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Computer Science 101Lecture 34
author.handalak.com/.../ images/javascript.jpg

• Fall Semester 2008
• Friday, April 11
• Week 13/18
• Albert H. Carlson

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Announcements

• HW 5 is due Today, April 11
• Your HTML project is due Friday May 2
• The final is a mass final on Monday of Finals
  week, 7 9 pm in EP121

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People in Security

• Cyberextortionist
• Threatens to damage, or damages, systems if not
  paid
• Sometimes uses the DOS or DDOS
• Cyberterrorist
• Pretty much the same thing as a
  cyberextortionist, but does damage for political
  reasons

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People in Security

• The most dangerous of all hackers
• the employee
• Typically has one of a few motives
• Financial Gain
• Revenge
• Exploit a weakness just to see if they can
• Capable of doing GREAT harm to a system

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Types of Attacks

• System Failure
• Information Theft
• Unauthorized use and access
• Hardware Theft
• Software Theft (illegal copying)
• Internet and network attacks

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Internet and Network Attacks

• There are lots of possible attacks
• The internet is especially vulnerable because it
  is so open
• Sniffing
• Monitoring the traffic going by without doing
  anything to the data
• Just plain a type of listening

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Internet and Network Attacks

• Spoofing
• Pretending you are another, valid, user
• May involve conversations and answering data
• Often done with IP addressing
• Man in the Middle
• Lets say there are two people who want to talk
• We will call them A and B

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Internet and Network Attacks

• We do NOT want to keep A from talking to B
• Rather, we want in on the conversation

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Internet and Network Attacks

• What we do, as C is to start conversations with
  BOTH A and B
• We spoof that we are B when we talk to A
• Similarly, we spoof that we are A when we talk to
  B

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Internet and Network Attacks

• The idea is to get information sent to us that A
  wants sent to B, or vice versa, that they would
  normally NOT want us to see
• Malware
• Then we have the normal bad stuff we have talked
  about before
• Trojan Horses with payload
• Viruses
• Worms
• Etc.

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Questions?