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“You can't trust any bugger further than you can throw him, and there's nothing you can do about it, so let's have a drink” Terry Pratchett Trust Areas.

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Presentation on theme: "“You can't trust any bugger further than you can throw him, and there's nothing you can do about it, so let's have a drink” Terry Pratchett Trust Areas."— Presentation transcript:

1 “You can't trust any bugger further than you can throw him, and there's nothing you can do about it, so let's have a drink” Terry Pratchett Trust Areas Steve Marsh Carleton University, November 25th, 2009 © stephen marsh, 2009

2 Outline Why What (including talk of many things) What Next Caveats…

3 Caveats Point, not tell…

4 Why?

5 The need for assurance

6 Why? The wisdom of crowds

7 Why? The aggregation of data

8 Why? Squeezing the tomatoes

9 Agents

10 Services and Grid

11 What?

12 Authentication and Security Reputation Systems Trust Management Systems Trusted Computing Regret Management Trust Reasoning Grids Agents HCI, Persuasion

13 Trust Management

14 Umbrella

15 Trust Management Background

16 Trust Management Currently

17 Trust Management Rule or Reputation…

18 Authentication and Security Proving you are who you say you are Proving you’re an okay person Getting access to resources Sending private messages (and receiving same) Getting assurance Gaining confidence Sharing secrets

19 Authentication and Security PKI

20 Authentication and Security WoT

21 Authentication and Security PGP

22 Authentication and Security Trusted Computing No, wait…

23 Trusted Computing (deserves its own slides…)

24 Authentication and Security Policies and Negotiation

25 Reputation Management

26 Principles

27 Reputation Management Whuffie

28 Reputation Management Practice

29 Reputation Management PageRank

30 Reputation Management SlashDot

31 Reputation Management eBay

32 Reputation Management Quis custodiet ipsos custodes?

33 Reputation Management P2P

34 Reputation Management Referral networks and “if you liked this…”

35 Reputation Management The Strength of Weak Ties

36 Reputation Management Transitivity

37 Regret Management

38 Persuasion (HCI)

39 (Some of ) This should not work!

40 Problems Deceit Expectations Fraud Cheap pseudonyms Attacks

41 Problems Deceit Expectations Fraud Cheap pseudonyms See next lecture… Attacks

42 Resources


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