1. Computer Crime and Security Measures
Week 5 cont.

2. Computer Crime Computers make activities easier
including illegal activities
New ways to commit old crimes
Crimes against
businesses - insiders and outsiders
hackers, competitors, criminal gangs

3. Crime Computers make crimes easier to commit more devastating
harder to detect
doable from long distances

4. New Terms
Virus
Worm
Trojan Horse
Trap Door

5. Fraud and Embezzlement
Embezzlement - fraudulent appropriation of property by a person to whom it has been entrusted
Requires
special knowledge
special programming skill
poor security

6. Fraud and Embezzlement
Aided by
anonymity
complexities of modern transactions increase the opportunities
Packet sniffers

7. Defending Against Dishonest Employees
Rotate responsibilities of employees with access to sensitive systems
Unique ID and password
Limit access to system
Audit trails
Screening and background checks of employees
Good security policies, whatever that is

8. Defending Against Fraud
Immediate checks on legitimate credit/debit cards
Programs to detect unusual spending
Holograms and photos on cards
Magnetic or digital finger printing
Physical hardware deterrents

9. Why is the Problem so Big?
Most customers do not want to verify ID
Most merchants don’t check
Security vs convenience

10. Sabotage and Information Theft
Unhappy employees
Attacks by competitors
Who else?

11. Nonmalicious Hacking No harm is done
Service - exposes security weaknesses
Help create need for tougher security
Information wants to be free
Some companies are ripping us off

12. Harmless?
Time and effort are involved in tracking down the intruder and shut off means of access
Verifications of no damage
Uncertainty that system is preserved
Trespassing is illegal

13. Mechanisms of Protection
Password protection

14. Internet Medium for researchers open access ease of use
ease of sharing
Security depended on trust
Attitudes about security have not caught up with the risk

15. Improving Security Awareness of extent of problem Education of users
Acceptance of responsibility

16. Internet Protection
Firewall

17. Crime Laws
Computer technology challenged existing laws and led to new ones
Larceny
Use of computer time
New laws
Access and use of computer without authorization is illegal