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Friday, May 19, 2023 2:00 pm - 3:00 pm EDT (GMT -04:00)

Master’s Thesis Presentation • Cryptography, Security, and Privacy (CrySP) • DP-Select: Improving Utility and Privacy in Tabular Data Synthesis with DP-GAN and Differentially Private Selection

Please note: This master’s thesis presentation will take place online.

Faezeh Ebrahimianghazani, Master’s candidate
David R. Cheriton School of Computer Science

Supervisor: Professor Florian Kerschbaum

Thursday, May 25, 2023 1:00 pm - 2:00 pm EDT (GMT -04:00)

Master’s Thesis Presentation • Systems and Networking • Topology-Aware Scheduling

Please note: This master’s thesis presentation will take place in DC 3317.

Sara Qunaibi, Master’s candidate
David R. Cheriton School of Computer Science

Supervisor: Professor Samer Al-Kiswany

We present a comprehensive empirical study of the impact partial network partitions have on cluster managers in data analysis frameworks. Our study shows that modern scheduling approaches are vulnerable to partial network partitions. Partial partitions can lead to a complete cluster pause or a significant loss of performance.

Friday, May 26, 2023 12:00 pm - 1:00 pm EDT (GMT -04:00)

Master’s Thesis Presentation • Data Systems • Efficient Geo-Distributed Transaction Processing

Please note: This master’s thesis presentation will take place online.

Joshua Hildred, Master’s candidate
David R. Cheriton School of Computer Science

Supervisor: Professor Khuzaima Daudjee

Distributed deterministic database systems support OLTP workloads over geo-replicated data. Providing these transactions with ACID guarantees requires a delay of multiple wide-area network (WAN) round trips of messaging to totally order transactions globally.

Friday, June 2, 2023 2:00 pm - 3:00 pm EDT (GMT -04:00)

CrySP Speaker Series on Privacy • CVE-2022-23491, or Why PO Boxes Can’t be Root Certificate Authorities Anymore

Please note: This talk will take place in DC 3317 and online over Zoom.

Joel Reardon, Associate Professor
Department of Computer Science, University of Calgary

Mozilla curates a set of root certificate authorities to validate hostnames for TLS in the Firefox browser. Many other software projects, such as Tor Browser and ca-certificates simply follow Mozilla’s list; other entities, such as Apple and Microsoft, make their own decisions for inclusion with considerations for Mozilla’s decisions and the associated public discussion.