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1 Security Hiroshi Toyoizumi

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Presentation on theme: "1 Security Hiroshi Toyoizumi"— Presentation transcript:

1 1 Security Hiroshi Toyoizumi toyo@u-aizu.ac.jp toyo@aoni.waseda.ac.jp

2 2 Social Engineering Your kindness may put you in danger. You as a team may put you in danger. Your reliable person may put you in danger. What can you do?

3 3 Malicious Mobile Codes: Viruses and Worms

4 4 Laroux: Excel Macro Virus

5 5 Current epidemics

6 6 Cracking Hijacking your machine. Stepping stone. Tamper with www pages. Leak of important information.

7 7 Scanning IP addresses

8 8 Detect Windows shared folder

9 9 How to protect cracking Anti-virus Pacth Encryption Firewalls IDS:Intrusion Detection System

10 10 BlackICE: An IDS

11 11 Secure communication using cryptography Encrypt important information. Certify the other party. Public Key Cryptography PKI ： Public Key Infrustructure

12 12 Common key system Cryptograhpy

13 13 Give it a try! Cipher communication Alice Bob

14 14 Any problems? It is easy to eavesdropping the key on thei internet.

15 15 Public Key Cryptograhpy

16 16 Give it a try! Public key cipher communication Alice Bob

17 17 Any problems ？ Swiching the public key. Man-in-the-middle-attack. Alice Bob

18 18 Digital signature

19 19 電子証明書は印鑑証明

20 20 Key with digital signature Alice Bob

21 21 Real cipher communication

22 22 Public key and digital signature

23 23 Certificate authority

24 24 e-Government

25 25 Topics Stop Blaming the Victims The author of Sasser Adware,Spyware Spoofing, Backdoor Personal Firewall Anti-virus Spam Intrusion Detection System Cookies, Java, Active-x Biometric

26 26 Role Play Cast  Ohta: Employee of Microsoft  Yamada: Employee of Takada delivery company  Employees of Waseda Hospital  Yamaguchi: accounting section  Yano: freshman in general affair

27 27 Scene 1: call from waseda delivery 1. Yano: Hello, this is Yano, general affair section in Waseda Hospital. 2. Yamada: Hi, this is Takada delivery calling. It seems that one of our customer wrongly faxed her address to your company. Could you fax it to us? 3. (after checking the fax machine.) 4. Yano: No, we haven’t received your fax. 5. Yamada: You may found it other place… Maybe in your accounting section? If you find it, please fax it to us at 03-1111-1111. 6. Yano: OK.

28 28 Scene 2: call from Microsoft 1. Ohta: Hello, this Ohta from Microsoft customer service. We found that your PC is sending too much viruses on the internet, and we received many complaints about it. Please download the anti-virus software that I will mention and install it on your PC. 2. Yano: Sure. Where can I find the software?

29 29 Scene 3: call from other section 1. Tahara: This is Tahara from accounting. Could you do me a favor? 2. Yamaguchi: Yes. What? 3. Thara: Our computers are all infected by viruses, but I need the address of a patient, Ryoko Hirosue. Could you call up the data on your screen and fax it to me at accounting section? 4. Yamaguchi: No problem.

30 30 Quiz Did you find any security problem in the role-play? Write them down. Describe the counter measures.

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