Brad Chen
J. Bradley Chen is area tech lead for Prevention in Google's Identity and Counterabuse Technologies Group. Previously he led Prevention and Revenue Engineering efforts at YouTube. Before YouTube, Dr. Chen started and managed the Native Client project in Google Chrome, bringing safe native code to millions of users. Prior to joining Google, he was Director of the Performance Tools Lab in Intel's Software Products Division. Chen served on the faculty of Harvard University from 1994-1998, conducting research in operating systems, computer architecture and distributed systems, and teaching a variety of related graduate and undergraduate courses. He has published widely on the subjects of computer systems security, performance and computer architecture. Dr. Chen has bachelors and masters degrees from Stanford University and a Ph.D. from Carnegie Mellon University.
You can find a full list of publications here.
Recent Professional Activities
- Program Co-Chair, 2010 Symposium on Operating System Design and Implementation (OSDI 2010)
- Program Committee, Workshop on Interaction between Operating Systems and Computer Architecture 2009 (WIOSCA).
- Program Committee, 2008 IEEE International Symposium on Workload Characterization (IISWC 2008), September 2008.
- Program Chair, 2008 ACM Workshop on Memory System Performance and Correctness, March 2008.
- Program Committee, 2008 Symposium on Operating System Design and Implementation (OSDI 2008)
- Advisory Board, Center for Networked Systems, U. C. San Diego. January 2008 to present.
- Program Committee, 2006 Symposium on Operating System Design and Implementation (OSDI 2006)
You can find a full list of publications here.
Authored Publications
Google Publications
Other Publications
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Language-Independent Sandboxing of Just-In-Time Compilation and Self-Modifying Code
Preview
Jason Ansel
Petr Marchenko
Úlfar Erlingsson
Elijah Taylor
Cliff L. Biffle
Bennet S. Yee
ACM SIGPLAN Conference on Programming Language Design and Implementation (PLDI), ACM SIGPLAN, New York, NY, USA. (2011)
Adapting Software Fault Isolation to Contemporary CPU Architectures
Robert Muth
Cliff L. Biffle
Victor Khimenko
Egor Pasko
Bennet Yee
Karl Schimpf
19th USENIX Security Symposium, USENIX (2010), pp. 1-11
Preview abstract
Software Fault Isolation (SFI) is an effective approach
to sandboxing binary code of questionable provenance,
an interesting use case for native plugins in a Web
browser. We present software fault isolation schemes for
ARM and x86-64 that provide control-flow and memory
integrity with average performance overhead of under
5% on ARM and 7% on x86-64. We believe these are the
best known SFI implementations for these architectures,
with significantly lower overhead than previous systems
for similar architectures. Our experience suggests that
these SFI implementations benefit from instruction-level
parallelism, and have particularly small impact for workloads that are data memory-bound, both properties that
tend to reduce the impact of our SFI systems for future
CPU implementations.
View details
Native Client: A Sandbox for Portable, Untrusted x86 Native Code
Bennet Yee
Greg Dardyk
Robert Muth
Tavis Ormandy
Shiki Okasaka
Neha Narula
Nicholas Fullagar
IEEE Symposium on Security and Privacy (Oakland'09), IEEE, IEEE, 3 Park Avenue, 17th Floor, New York, NY 10016 (2009)
Preview abstract
Native Client is an open-source research technology for running x86 native code in web applications, with the goal of maintaining the browser neutrality, OS portability, and safety that people expect from web apps. We released this project in December 2008 to get feedback from the security and broader open-source communities. We believe that Native Client technology will someday help web developers to create richer and more dynamic browser-based applications.
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System Support for Automated Profiling and Optimization
The Measured Performance of Personal Computer Operating Systems
Yasuhiro Endo
Kee Chan
David Mazières
Antonio Dias
Margo I. Seltzer
Michael D. Smith
ACM Trans. Comput. Syst., vol. 14 (1996), pp. 3-40
The Measured Performance of Personal Computer Operating Systems
Yasuhiro Endo
Kee Chan
David Mazières
Antonio Dias
Margo I. Seltzer
Michael D. Smith
SOSP (1995), pp. 299-313
Avoiding Conflict Misses Dynamically in Large Direct-Mapped Caches
Dynamic Page Mapping Policies for Cache Conflict Resolution on Standard Hardware