Medina: Combining Evidence to Build Trust. Reasoning about trust without onions. Johannes Helander Ben Zorn Microsoft Research May 23, 2007 Oakland, WSP07. A Second Look at Passwords. Not as strong as encryption would suggest Ad-hoc methodology Back-channels (e.g. password reset)
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Reasoning about trust without onions.
May 23, 2007
(14) front door
(16) side door
Time decay & integration
Multiple sources of evidence
Imprecise dataFramework for reasoning about trust
HIP, puzzle, biometric, proximity
peer rating, knowledge quiz
USB stick, web page, email, IM, wireless
Virtual USB stick
Proximity, humanity, spoken word
Reflection of inter-human trustScenario: Sharing soccer picture @café