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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.

Tuesday, June 6, 2023 1:00 pm - 2:00 pm EDT (GMT -04:00)

PhD Seminar • Machine Learning • Exploring the Limits of Model-Targeted Indiscriminate Data Poisoning Attacks

Please note: This PhD seminar will take place in DC 1304 and virtually.

Yiwei Lu, PhD candidate
David R. Cheriton School of Computer Science

Supervisor: Professor Yaoliang Yu

Indiscriminate data poisoning attacks aim to decrease a model’s test accuracy by injecting a small amount of corrupted training data. Despite significant interest, existing attacks remain relatively ineffective against modern machine learning (ML) architectures.