Conference Schedule

This is a draft program, and we expect minor modifications may be made prior to the conference.

8:00

Breakfast (provided)

FOCI

9:00-12:00

12:00

Lunch (provided)

FOCI

13:30-17:00

18:00

Opening Reception (refreshments and food trucks)

8:00

Breakfast (provided)

8:30

Opening Remarks

9:00

Keynote: Privacy and Ads on the Emerging Agentic Web

Franziska Roesner 9:00-10:00 Abstract: Over the last two or more decades, a key privacy issue on the web has been the collection and use of data in the context of targeted advertising. Members of the computer security and privacy research community (and adjacent communities) have done substantial work over that time to characterize (and improve) this ecosystem and its risks, including: assessing the privacy implications of online tracking and ad targeting, studying problematic (e.g., manipulative or adversarial) ad content and ad targeting, and exploring privacy-preserving ad mechanisms. In this talk, I will first overview research findings and ecosystem developments around privacy and the online advertising ecosystem up until now. Then, I will look to the future in this era of generative AI, considering how tracking and advertising may manifest in the emerging “agentic web” — in which users interact substantially with AI agents, and agents interact directly with other web content — and how the landscape of privacy and related risks may evolve. Bio: Franziska (Franzi) Roesner is the Brett Helsel Professor in the Paul G. Allen School of Computer Science & Engineering at the University of Washington, where she co-directs the Security and Privacy Research Lab. Her research focuses broadly on computer security and privacy for end users of existing and emerging technologies. Her work has studied topics including online tracking and advertising, security and privacy for marginalized and/or vulnerable user groups, security and privacy in emerging augmented reality (AR) and IoT platforms, and online trust and safety. She is the recipient of a Google Security and Privacy Research Award and a Google Research Scholar Award, a Consumer Reports Digital Lab Fellowship, an MIT Technology Review "Innovators Under 35" Award, an Emerging Leader Alumni Award from the University of Texas at Austin, and an NSF CAREER Award. She has received paper awards or runners-up at the USENIX Security Symposium, the IEEE Symposium on Security & Privacy, the Internet Measurement Conference, the WebConf, the Annual Privacy Forum, and the CHI Conference on Human Factors in Computing Systems; as well as Test of Time Awards at NSDI, the IEEE Symposium on Security & Privacy, and USENIX Security. She currently serves on the USENIX Security steering committee. She received her PhD from the University of Washington in 2014 and her BS from UT Austin in 2008.

10:00

Break

10:30

Best Student Paper Session

10:30-12:00

12:00

Lunch (provided)

13:30

Technical sessions

15:00

Break

15:30

Technical sessions

17:00

AMA with chairs

17:30

Rump Session

18:00

Optional led excursions (on your own)

8:00

Breakfast (provided)

9:00

Keynote: TBA

John Scott Railton 9:00-10:00

10:00

Break

10:30

Technical Sessions

10:30-12:00

12:00

Lunch (provided)

13:30

Technical sessions

15:00

Break

15:30

Networking Session

Details: Think of this session as a human peering exchange point: a place where attendees can establish new connections and strengthen existing ones. Community Connectors will help attendees find others with shared interests, complementary experiences, or knowledge they are seeking. Whether you are attending PETS for the first time, looking to expand your network, interested in helping others make connections, or simply hoping to meet a few new people, this session is for you. Read more details or contact the organizer with questions.

15:30

BoFs

16:30

Bus to PETS Gala (TELUS Spark Science Centre)

17:00

Poster Session (Atrium, TELUS Spark Science Centre)

18:30

Banquet Dinner (TELUS Spark Science Centre)

20:00

Bus back to University

8:00

Breakfast (provided)

9:00

Keynote: Managing complexity

Fredrik Strömberg 9:00-10:00 Abstract: What is strategy, innovation, and cybersecurity? What is trust and trustworthiness? What design principles are useful for managing complexity - in computer systems, organizations, and life? I have tried to answer these questions for almost two decades, driven by insatiable curiosity and at times unhealthy perfectionism. This talk is about the journey so far, more and less successful attempts at supporting and doing research, the principles that guide me and my companies, and the meaning of "good enough". Bio: Fredrik Strömberg is co-CEO at Mullvad VPN and Head of Research at the Amagicom group, consisting of Mullvad VPN, Tillitis and Glasklar Teknik. His main interest for the past decade has been the design and construction of more trustworthy computer systems. Together with colleagues and collaborators he has worked on the open-source projects System Transparency, Sigsum, Tillitis TKey, Tillitis HSM as well as open-source silicon and other open-source software and hardware-related internal research projects. Together with his friend Daniel Berntsson he founded Amagicom AB and Mullvad VPN, 17 years ago. His interests in computer security, strategy and creativity started a decade before that, in no small part thanks to his surroundings. Today he's a proud fourth-generation business owner and third-generation inventor. Mullvad was founded with the vision of making mass surveillance and online censorship ineffective, using entrepreneurship as a method for direct political action. Fredrik and Daniel has consistently refused outside investment in order to retain long term strategic flexibility, and re-invest much of Mullvad's profits in research and open-source software and hardware projects.

10:00

Break

10:30

Technical Sessions

10:30-12:00

12:00

Lunch (provided)

13:30

Technical sessions

15:00

Break

15:30

Technical sessions

17:00

Closing Remarks, Awards, Walk to celebration

17:30

Closing Celebration (Rump session 2, local trivia, games)

8:00

Breakfast (provided)

9:00

Welcome! (coffee and chat)

9:30

Opening Remarks

9:45

Keynote: When Everyone's a Target: Rethinking Threat Models in the Age of Ambient, Inherited, and AI-Enhanced Surveillance

Rebekah Brown, The Citizen Lab 9:45–11:00 Abstract:
Traditional threat modeling starts with asking "who is the target, who is the adversary, and what are they after?" For high-risk groups such as journalists, activists, and dissidents, the answers have historically been state actors with advanced capabilities who are interested in the target's communications, location, and social circles. But the volume and types of data now available, along with shifts in who controls this information, have changed many of these assumptions.

The Mosaic Theory, where individual data points combine to reveal sensitive patterns no single piece would expose, has been operationalized at scale. Contextual data collected through everyday technology use is now fed into machine learning systems capable of inferring information never explicitly disclosed by an individual, enabling not only targeted attacks, but digital stalking, doxxing, and impersonation. Fully automated profiling systems now exist that autonomously scrape, collect, and analyze raw user data using coordinated agents, eliminating the need for background knowledge or profiling expertise. As a result, threat models can no longer be limited to high-value targets or explicitly sensitive data. They must account for how ordinary digital traces can be transformed into actionable intelligence about almost anyone.

This talk draws on Citizen Lab research into targeted attacks and ad-tech surveillance and new work on stalkerware, alongside emerging research on AI-enabled profiling, to address how researchers and technologists should prioritize between high-sophistication targeted threats and lower-sophistication, mass-availability threats, including AI tools now accessible to any abuser or state actor.
Bio:
Rebekah Brown is a senior researcher at the Citizen Lab focussing on targeted threats against civil society. She has over 20 years of experience in threat intelligence and analysis. Before joining the Citizen Lab, Rebekah worked at Apple, where she focused on complex threat models and helped design and implement features for individuals at increased risk for stalking, harassment, and abuse.

11:00

Coffee break

11:30

Session A

11:30–12:30 From PETs to PLTs (from Privacy Enhancing Technologies to Purpose Limiting Technologies) Carmela Troncoso (mpi-sp) Privacy in Practice: Reflections on a Semester Long Course Project Alishah Chator (Baruch College) and Julie Ha (Boston University)

12:30

Lunch Break (TBD)

14:00

Session B

14:00–15:00 Should Opt-Out Depend on Where You Live? Comparing Mobile Privacy Choices Across Jurisdictions Sujin Han (KAIST) and Insu Yun (KAIST) Transmissions of Hashed Personally Identifiable Information to Third Parties Across Websites Tin Le (University of Calgary), Joel Reardon (University of Calgary), Serge Egelman (ICSI / UC Berkeley) and Narseo Vallina-Rodriguez (IMDEA Networks Institute)

15:00

Traditional Hot PETS Ice Cream Break

15:30

Session C

15:30-17:00 Get your Hands off my Hand: Privacy and Bionic Limbs Kwesi Afari Darfoor (University of Alberta), Patrick M. Pilarski (University of Alberta) and Bailey Kacsmar (University of Alberta) Understanding and addressing censorship in university networks Seungju Lee (Princeton University), Leon Schuermann (Princeton University), and Constantine Doumanidis (Princeton University) Breaking the web is good for privacy Saiid El Hajj Chehade (EPFL)

17:00

Voting for best talk

17:10

Awards and Closing Remarks

8:30

PETS Hike

8:30-15:30 Please see the hike page for full details. You must register at the welcome desk to participate; spaces are limited.