Yoris Au

Chair and Associate Professor Georgia Southern University

  • Statesboro GA

Yoris Au has a unique blend of technical, managerial and academic experiences in industry, consulting and academia

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Think that call or online meeting is secure? You might want to ask an expert first?

As most of North America is now working from home, those trying to work are now finding board rooms and those always required meeting are now taking place online.   Whether it is Webex, Zoom, Join.Me, Skype or even FaceTime – the convenience is ideal. But just how secure those calls are and whether or not someone is collecting, eavesdropping or recording might be altogether completely different.   From Zoom’s CEO Eric Yuan: During normal operations, Zoom clients attempt to connect to a series of primary datacenters in or near a user’s region, and if those multiple connection attempts fail due to network congestion or other issues, clients will reach out to two secondary datacenters off of a list of several secondary datacenters as a potential backup bridge to the Zoom platform. In all instances, Zoom clients are provided with a list of datacenters appropriate to their region. This system is critical to Zoom’s trademark reliability, particularly during times of massive internet stress.” In other words, North American calls are supposed to stay in North America, just as European calls are supposed to stay in Europe. This is what Zoom calls its data center “geofencing.” But when traffic spikes, the network shifts traffic to the nearest data center with the most available capacity. China, however, is supposed to be an exception, largely due to privacy concerns among Western companies. But China’s own laws and regulations mandate that companies operating on the mainland must keep citizens’ data within its borders. April 03 TechCrunch If you’re a journalist covering this topic, there’s still quite a few questions to be asked?   What do users need to know about these platforms for meetings? Is there any information that shouldn’t be shared? Are there ways to guarantee enhanced security? And in these extraordinary times, does the risk outweigh the reward for businesses looking to carry on and stay afloat? If you’re asking – we’re here to help.   Yoris A. Au is chair of the Department of Information Systems at Georgia Southern University. He is an expert in the areas of cyber security and telecommunications. Yoris is available to speak with media regarding this topic – simply click on his icon to arrange an interview.

Yoris Au

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Biography

Yoris A. Au is chair of the Department of Information Systems and associate professor of information systems. He comes to Georgia Southern from the University of Texas at San Antonio (UTSA) where he has served as the Information Systems and Cyber Security Department Chair for the past four years. Au holds a Ph.D. in business administration with a concentration in information and decision sciences from the Carlson School of Management at the University of Minnesota, an MBA from the Katz Graduate School of Business at the University of Pittsburgh and a bachelor’s degree in civil engineering from Parahyangan Catholic University in Indonesia.

Areas of Expertise

Cyber Security
Operating Systems Security
Telecommunication Systems
Big Data & Analytics
Information Systems Economics
Wide Area Networks

Education

Carlson School of Management, University of Minnesota

Ph.D.

Information and Decision Sciences

2005

University of Minnesota, Minneapolis, MN

Doctor of Philosophy

Information and Decision Sciences

2005

University of Pittsburgh, Pittsburgh, PA

Master

Business Administration

1993

Affiliations

  • Associate Editor, Electronic Commerce Research and Applications
  • Editorial Review Board Member, Information & Management
  • Reviewer, Journal of Management Information Systems and International Journal of Electronic Commerce

Articles

Publication Preview Effects of Freemium Strategy in the Mobile App Market: An Empirical Study of Google Play

Journal of Management Information Systems

Charles Zhechao Liu, Yoris A. Au, Hoon Seok Choi

2015

This paper examines the effect of the freemium strategy on Google Play, an online marketplace for Android mobile applications. By analyzing a large panel data set consisting of 711 ranked mobile apps, we found that the freemium strategy is positively associated with increased sales of the paid mobile apps. Positive trial experience as represented by high review rating of the free version of a mobile app leads to higher sales of its paid version, whereas high visibility of the free version of a mobile app as represented by its product rank does not have a significant impact on the sales of its paid version. This finding suggests that although offering a free trial version is a viable way to improve the visibility of a mobile app, offering a quality free app is more important in boosting sales of the paid app. Moreover, we found that the impact of review rating is reduced when the free version is offered, or when the mobile app is a hedonic app, because consumers have the ability to experience the app themselves before purchase. These findings extend understanding of the freemium business model to include a market characterized by simultaneous intramarket competition for both the freemium and paid products and demonstrate how such dynamics may influence sales of the paid products.

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Effects of freemium strategy in the mobile app market: An empirical study of google play

Journal of Management Information Systems

Charles Zhechao Liu, Yoris A Au, Hoon Seok Choi

2014

This paper examines the effect of the freemium strategy on Google Play, an online marketplace for Android mobile applications. By analyzing a large panel data set consisting of 711 ranked mobile apps, we found that the freemium strategy is positively associated with increased sales of the paid mobile apps. Positive trial experience as represented by high review rating of the free version of a mobile app leads to higher sales of its paid version, whereas high visibility of the free version of a mobile app as represented by its product rank does not have a significant impact on the sales of its paid version. This finding suggests that although offering a free trial version is a viable way to improve the visibility of a mobile app, offering a quality free app is more important in boosting sales of the paid app. Moreover, we found that the impact of review rating is reduced when the free version is offered, or when the mobile app is a hedonic app, because consumers have the ability to experience the app themselves before purchase. These findings extend understanding of the freemium business model to include a market characterized by simultaneous intramarket competition for both the freemium and paid products and demonstrate how such dynamics may influence sales of the paid products.

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An empirical study of the freemium strategy for mobile apps: Evidence from the google play market

An empirical study of the freemium strategy for mobile apps: Evidence from the google play market

Thirty Third International Conference on Information Systems

2012

This paper examines the effect of the freemium strategy on Google Play, an online marketplace for Android mobile apps. By analyzing a large panel dataset consisting of 1,597 ranked mobile apps, we found that the freemium strategy is positively associated with increased sales volume and revenue of the paid apps. Higher sales rank and review rating of the free version of a mobile app both lead to higher sales rank of its paid version. However, only higher review rating of the free app contributes to higher revenue from the paid version, suggesting that although offering a free version is a viable way to improve the visibility of a mobile app, revenue is largely determined by product quality, not product visibility. Moreover, we found that the impact of review rating is not significant when the free version is offered, or when the mobile app is a hedonic app.

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