Jin Han - Twitter Inc.

Talk: Fighting Spam and Fake Accounts in Real Time at Twitter

Spam fighting and fake accounts prevention are especially challenging at Twitter, due to the real-time characteristic of Twitter service, where millions of requests are processed per second. This talk will reveal the underlying scalable safety systems built and adopted at Twitter, with which spam attacks can be blocked instantly and fake accounts can be detected and eliminated right after creation.

About Jin Han

Dr. Jin Han is currently a Senior Software Engineer at Twitter. He is the tech lead of fake accounts team in Product Safety. Jin designed and implemented critical safety systems in Twitter which are used to protect the Twitter platform and all the users and developers on the platform.

Carl E. Landwehr - George Washington University & LeMoyne College

Talk: How Can we Enable Privacy in an Age of Surveillance and Big Data Analytics?

Even though some seem to think privacy is dead, we are all still wearing clothes, as Bruce Schneier observed at a recent conference on surveillance. Yet big data and big data analytics are leaving some of us feeling a bit more naked than before. This talk will provide some personal observations on privacy today and then outline some research areas where progress is needed to enable society to gain the benefits of analyzing large datasets without giving up more privacy than necessary. 

About Carl E. Landwehr

Carl Landwehr is a Lead Research Scientist at George Washington University and McDevitt Visiting Professor of Computer Science at LeMoyne College. He edits the security and privacy Viewpoints column for Communications of the ACM and has served as Editor-in-Chief of IEEE Security & Privacy Magazine. At LeMoyne, he has developed a new course for undergraduates entitled “Cybersecurity for Future Presidents.” Current interests include understanding privacy research needs and fostering the creation of industry-based building codes for reducing security vulnerabilities in critical systems. Dr. Landwehr is a Fellow of the IEEE for contributions to cybersecurity and is a member of the National Cybersecurity Hall of Fame.

Susan Landau - Worcester Polytechnic Institute

Talk: Crypto Wars: The Apple iPhone and the FBI

The US government and cryptographers, industry, and academia faced off in the 1990s over the ability to use strong encryption. The government’s tool of choice to prevent deployment was export controls. In 1996 the National Research Council issued a report on cryptography policy that concluded "On balance, the advantages of more widespread use of cryptography outweigh the disadvantages"; in 2000, the government substantively loosened export controls. Deployment was nonetheless slow—until the Snowden disclosures. Apple and Google’s efforts to provide easy-to-use, widely deployed consumer encryption has clashed with FBI and Department of Justice investigative techniques, and twenty years later, we are in Crypto Wars II. This talk will explain the conflicts, the equities, and the potential outcomes.

About Susan Landau

Susan Landau works at the intersection of cybersecurity, national security, law, and policy. During the Crypto Wars of the 1990s, her insights on how government encryption policy skewed civil society and business needs for security helped win the argument for a relaxation of cryptographic export controls.  Beginning in the early 2000s, Landau was an early voice in the argument that law-enforcement requirements for embedding surveillance within communications infrastructures created long-term national-security risks. Her position that securing private-sector telecommunications was in the national-security interest ran contrary to public thinking at the time and deeply influenced policy makers and scholars. Landau's book "Surveillance or Security? The Risks Posed by New Wiretapping Technologies,'' (MIT Press) won the 2012 Surveillance Studies Book Prize, while "Privacy on the Line: the Politics of Wiretapping and Encryption" co-authored with Whitfield Diffie (MIT Press, 1998) won the IEEE-USA Award for Distinguished Literary Contributions Furthering Public Understanding of the Profession and the McGannon Book Award for Social and Ethical Relevance in Communication Policy Research. Landau has testified to Congress and frequently briefed US and European policymakers on encryption, surveillance, and cybersecurity issues. Landau is a Professor of Cybersecurity Policy at Worcester Polytechnic Institute, and has previously been a Senior Staff Privacy Analyst at Google, a Distinguished Engineer at Sun Microsystems, and a faculty member at the University of Massachuestts and Wesleyan University. A 2015 inductee in the Cybersecurity Hall of Fame and a 2012 Guggenheim fellow, Landau was a 2010-2011 fellow at the Radcliffe Institute for Advanced Study and the recipient of the 2008 Women of Vision Social Impact Award. She is also a fellow of the American Association for the Advancement of Science and of the Association for Computing Machinery. She received her BA from Princeton, her MS from Cornell, and her PhD from MIT.

Jeffrey Voas - National Institute of Standards and Technology (NIST)

Talk: Networks of 'Things' - Demystifying IoT

System primitives allow formalisms, reasoning, simulations, and reliability and security risk-tradeoffs to be formulated and argued. In this work, five core primitives belonging to most distributed systems are presented. These primitives apply well to systems with large amounts of data, scalability concerns, heterogeneity concerns, temporal concerns, and elements of unknown pedigree with possible nefarious intent.  These primitives form the basic building blocks for a Network of ‘Things’ (NoT), including the Internet of Things (IoT).  This talk discusses the underlying and foundational science of IoT. To our knowledge, the ideas and the manner in which the science underlying IoT is presented here is unique.

About Jeffrey Voas

Jeffrey Voas is a computer scientist at the National Institute of Standards and Technology (NIST) in Gaithersburg, MD. Before joining NIST, Voas was an entrepreneur and co-founded Cigital (1992). After 13 years at Cigital, Voas accepted a director position at Science Applications International Corporation (SAIC) and was named an SAIC Technical Fellow (2005-2009). He has served as the IEEE Reliability Society President (2003-2005, 2009-2010), and serves as the IEEE Computer Society's Second VP (2010). Voas is IEEE Division VI's Director-Elect (2010).

Negar Kiyavash - University of Illinois at Urbana-Champaign

Talk: On the Simultaneous Preservation of Privacy and Data Analytic in Anonymized Networks

The proliferation of online social networks has helped in generating large amounts of graph data which has immense value for data analytics. Network operators, like Facebook, often share this data with researchers or third party organizations, which helps both the entities generate revenues and improve their services. As this data is shared with third party organizations, the concern of user privacy becomes pertinent. Hence, it becomes essential to balance utility and privacy while releasing such data. Advances in graph matching and the resulting recent attacks on graph datasets paints a grim picture. We discuss the feasibility of privacy preserving data analytics in anonymized networks and provide an answer to the question “Does there exist a regime where the network cannot be deanonymized, yet data analytics can be performed?

About Negar Kiyavash

Negar Kiyavash is Willett Faculty Scholar at the University of Illinois at Urbana- Champaign. She is a joint Associate Professor of Industrial and Enterprise Engineering and Electrical and Computer Engineering. She is also affiliated with the Coordinated Science Laboratory (CSL) and the Information Trust Institute. She received her Ph.D. degree in electrical and computer engineering from the University of Illinois at Urbana- Champaign in 2006. Her research interests are in design and analysis of algorithms for network inference and security. She is a recipient of National Science Foundation’s CAREER and The Air Force Office of Scientific Research Young Investigator awards, and the Illinois College of Engineering Dean’s Award for Excellence in Research.

Vesselin Popov - University of Cambridge Psychometrics Centre

Talk: The Darkness in Data: Unravelling the Impact of Social Media, Big Data and Psychometrics on Privacy

Decisions are made by and about our digital personas every millisecond. Every online interaction contains psychological information about the user that can - with the right tools - be extracted and used for a range of purposes, including personalisation. An algorithm with access to your Facebook Likes can more accurately predict your personality than your own mother, but the level of trust we vest in the users of these technologies (whether they be companies, governments or other individuals) does not always correspond to the utility or value of sharing our data in the first place. Technologies that embrace the darkness in data - its noisy, unpredictable human element - are those that ought to prevail. This talk will treat personalisation and privacy as allied goals, rather than conflicting ideals, and explore how social media, Big Data and psychometrics can work together to enhance both these qualities in our digital experiences. 

About Vesselin Popov

Vesselin Popov is the Business Development Director for the University of Cambridge Psychometrics Centre, a multidisciplinary research institute specialising in online behaviour and psychological assessment. Vess is responsible for the Centre’s commercial partnerships and oversees a range of projects to increase the understanding and use of Big Data Psychology in business and the community. He identifies areas where psychometric techniques can deliver the greatest impact and drives product development strategy, helping to put cutting-edge tools in the hands of citizens.
Vess also coordinates Apply Magic Sauce, a battery of predictive algorithms based on over 6 million users’ psychological and social media data. Apply Magic Sauce API translates digital footprints of human behaviour into accurate psycho-demographic profiles. It has had a tremendous impact on public awareness and engagement with this area of research, and supports academics and businesses around the world in enhancing privacy and personalisation in the digital age.

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