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What and Who
Title:Mitigating data leaks in real world systems
Speaker:Aastha Mehta
coming from:Max Planck Institute for Software Systems
Speakers Bio:
Event Type:SWS Student Defense Talks - Thesis Proposal
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Level:Public Audience
Date, Time and Location
Date:Thursday, 7 March 2019
Duration:60 Minutes
Building:E1 5
Unintended data disclosures are a major concern for many online services, such as healthcare systems, government departments, and web services. Data may leak over explicit output channels of the systems, for instance due to accidental bugs and misconfigurations in the system. Data may also leak over various side channels, for instance, in a cloud environment where a tenant shares the Cloud provider’s infrastructure with other mutually distrusting tenants.

In this thesis, we address the problem of unintended data disclosures in web services due to both types of causes, i.e. explicit leaks and side channel leaks. Specifically, we propose a system to mitigate explicit leaks due to accidental bugs in database-backed services; and a system to mitigate network side channel leaks in the tenants of an infrastructure-as-a-service (IaaS) Cloud.

In this talk, I will first present a high level overview of the design, implementation, and evaluation of Qapla, which is a system to ensure policy compliance in database-backed services.

Then I will present our ongoing work on the design, implementation, and evaluation of Pacer, which is a system to mitigate network side channels in Cloud tenants. Pacer mitigates network side channels using traffic shaping. Pacer provides a generic abstraction of a traffic shaping tunnel, which encapsulates the tenant's network traffic, and shapes it to make it independent of the tenant's secrets. We present a prototype with Pacer's tunnel endpoints integrated in the Cloud hypervisor and the client OS. Our preliminary evaluation shows that Pacer can enforce traffic shaping securely, while incurring modest overheads on bandwidth, client latencies, and server throughput.
Video Broadcast
Video Broadcast:YesTo Location:Kaiserslautern
To Building:G26To Room:111
Meeting ID:
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Attachments, File(s):
Maria-Louise Albrecht/MPI-KLSB, 02/27/2019 10:46 AM
Last modified:
Maria-Louise Albrecht/MPI-KLSB, 02/27/2019 10:58 AM
  • Maria-Louise Albrecht, 02/27/2019 10:58 AM -- Created document.