securing online transactions with a trusted digital identity dave steeves -...
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Securing Online Transactions with a Trusted Digital Identity
Dave Steeves - [email protected] Security Software EngineerMicrosoft’s Security Business & Technology UnitSystem Protection Products Team
© 2005. Microsoft Corporation. All rights reserved.
Outline
Goals Rationale Securing Online Transactions Enabling Secure Scenarios
Trusted Digital Identity
Goals1. Enable customers to securely perform
online transactions on an insecure machine, over a hostile internet
Bellua Cyber Security Conference 2005
2. Find more secure scenarios which are enabled with a trusted digital identity
TIPPI Workshop
Online Bank Fraud in the News
“A Miami man blames Bank of America for more than $90,000 stolen in an unauthorized wire transfer to Latvia. Joe Lopez filed a lawsuit on Feb. 7 claiming that Bank of America had not alerted him to malicious code that could -- and indeed had -- infected his computer. A forensic investigation by the U.S. Secret Service revealed that a Trojan called Coreflood, which acts as a keystroke logger, had compromised one of his PCs.”
http://searchnetworking.techtarget.com
The Threat of Identity Theft
RSA Security chief executive Art Coviello suggested that the effects were already being felt, pointing out that some Australian banks have recently pulled out of planned web services because of security fears.
"We are at a confidence crisis. For the first time we run the risk of taking a step backwards and the reason is the threat of identity theft," he said.
http://www.vnunet.com/news/1161914
Generic Transaction Model
Remember the User
Online Banking with User
Secure Protocol + USER
Threat 1: Phishing
Threat 2: “Man In the Middle”?
Threat 3: Computer is Fully Compromised; aka 0wn3d
Two-Factor Authentication “Protecting Against Phishing by Implementing
Strong Two-Factor Authentication” https://www.rsasecurity.com/products/securid/whitepapers
For example:
Bar is Raised, but High Enough?
Does strong authentication add enough security to bank online?
Threat 1*: Phishing
Threat 2*: Man in the Middleby Social Engineering
Threat 3*: Fully Compromised
Focus on Verification Stages
Secure Verification Content
Client Server
Human-User Server
Today’s Online Banking
Verification Stage
Secure Online Banking
Secure Online Banking
Secure the Receipt
Securing Online Transactions Recap
Current Online Transaction Models Threats Still Exist
Solution One Time Secret per Transaction Keep Secret Off Untrusted Device
Reduces Attack Surface Attack vectors localized
Hardware Hacking/Physically Present Tempest Attacks
Break Crypto
Trusted Digital Identity
Mini MAC Connectivity through DAC system Enable specific, fine grain scenarios
Scenarios
Online Transactions Digital Rights Management Secure, Redundant Storage. Security and System Configurations Paperless Money
LimitationsSize of mobile device interfaces are smallSize of mobile device is smallHorsepower of a mobile device
Realistic scenariosNot real timeNot heavily dependant on performance
Questions for TIPPI Attendees
What end-to-end scenarios can we enable or include with a v1 of this idea?
What end-to-end scenarios can we enable in the future?
Do we need to provide trusted interfaces with Mandatory Access Control (MAC) to achieve a trusted identity?
Do we need to ensure the user has the only access to the Identity interfaces?
© 2005. Microsoft Corporation. All rights reserved.Microsoft is a registered trademark of Microsoft Corporation in the United States and/or other countries. The names of actual companies and products mentioned herein may be the trademarks of their respective owners.