197 research outputs found
Do Security Vulnerability Announcemnets Impact Software Vendors - An Event Study Analysis
In this paper, we use the event study methodology to examine the role that financial markets play in determining the impact of vulnerability disclosures on software vendors. We collect data from leading national newspapers and industry sources by searching for reports on published software vulnerabilities. Our main result is that vulnerability disclosures do lead to a negative and significant change in market value for a software vendor. On average, a vendor loses around 0.6% value in stock price when a vulnerability is reported. To provide further insight, we use the information content of the disclosure announcement to classify vulnerabilities into various types. This is the first study to measure vendors’ incentive to develop secure software and also provides many interesting implications for software vendors as well as policy makers
Role of Online Social Networks in Job Search by Unemployed Individuals
The recent growth of online social networks has enabled job seekers to stay connected with all of their acquaintances. Thus the number of online connections – weak or strong – that an individual is able to manage has increased significantly. In this paper, we first examine if an individual’s online social network plays a role in driving her job search behavior. Secondly, we examine how the ties (weak and strong) and search intensity affect the job outcomes (job leads, interviews and offers) received from online social networks vs. those from other job search modes like career fairs & agencies, newspapers & magazines, internet, and close friends and family (offline). Using a survey data of 109 unemployed job seekers, we find that weak ties are especially helpful in generating job leads but it is the strong ties that play an important role in generating job interviews and job offers
Security, Fraudulent transactions and Customer Loyalty: A Field Study
Security and Privacy has become a dominant issue for both consumers and corporations. In this paper, we investigate how customer behavior is affected after they have been a victim of financial fraud. Our analysis provides insights into how security concerns affect the continuation of the existing relationship of the customers depending on kind of fraudulent transactions. With the data from one of the largest banks in the US, we show that the probability of ending the relationship in the next six months increases significantly after a fraudulent transaction. We provide results with a detailed analysis including the kind of fraudulent transaction, tenure and location
An Empirical Analysis of Cellular Voice and Data services
Cellular telephony and associated data services has been a major social
phenomena for well over a decade now. It has changed the way - in some
countries more than others - in which people communicate. In many
countries in Northern Europe and Asia, its penetration rates are very
high and in others less so but in all cases it has engendered change at
multiple levels - socially as noted and in terms of market structure and
competition with the established Incumbent Local Exchange and Inter
Exchange service providers. However, there has been little work
published in the academic literature on user consumption of cellular
voice and data services. This has been due to the unavailability of
longitudinal data at the individual user level on their consumption of
voice and data services. We have such data from a large cellular service
provider in Asia. Demand for voice and data services is influenced by
the tariffs or 'service plans' offered by firms. In our analysis we
empirically estimate the drivers for cellular services how demographic
and plan characteristics affect the user choices. We first provide a
theoretical model and then provide insight into consumption patterns
over a one year period of cellular voice and data services and relate it
to service plan design
Internet Exchanges for Used Books: An Empirical Analysis of Product Cannibalization and Welfare Impact
Information systems and the Internet have facilitated the creation of used-product markets that feature a
dramatically wider selection, lower search costs, and lower prices than their brick-and-mortar counterparts
do. The increased viability of these used-product markets has caused concern among content creators and
distributors, notably the Association of American Publishers and Author’s Guild, who believe that used-product
markets will significantly cannibalize new product sales.
This proposition, while theoretically possible, is based on speculation as opposed to empirical evidence. In this
paper, we empirically analyze the degree to which used products cannibalize new-product sales for books—one
of the most prominent used-product categories sold online. To do this, we use a unique data set collected from
Amazon.com’s new and used book marketplaces to measure the degree to which used products cannibalize
new-product sales. We then use these estimates to measure the resulting first-order changes in publisher welfare
and consumer surplus.
Our analysis suggests that used books are poor substitutes for new books for most of Amazon’s customers.
The cross-price elasticity of new-book demand with respect to used-book prices is only 0.088. As a result, only
16% of used-book sales at Amazon cannibalize new-book purchases. The remaining 84% of used-book sales
apparently would not have occurred at Amazon’s new-book prices. Further, our estimates suggest that this
increase in book readership from Amazon’s used-book marketplace increases consumer surplus by approximately
45.05 million
loss in publisher welfare and a 87.92 million annually from the introduction of used-book markets at Amazon.com.NYU, Stern School of Business, IOMS Department, Center for Digital Economy Researc
Effect of Electronic Secondary Markets on the Supply Chain
We present a model to investigate the competitive implications of electronic
secondary markets that promote concurrent selling of new and used goods on
a supply chain. In secondary markets where suppliers cannot directly utilize used
goods for practicing intertemporal price discrimination and where transaction costs
of resales is negligible, the threat of cannibalization of new goods by used goods
become significant. We examine conditions under which it is optimal for suppliers to
operate in such markets, explaining why these markets may not always be detrimental
for them. Intuitively, secondary markets provide an active outlet for some highvaluation
consumers to sell their used goods. The potential for such resales lead to an
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increase in consumersâ valuation for a new good, leading them to buy an additional
new good. Given sufficient heterogeneity in consumerâ s affinity across multiple suppliersâ
products, the â market expansion effectâ accruing from consumersâ cross-product
purchase affinity can mitigate the losses incurred by suppliers from the direct â cannibalization
effect.â We also highlight the strategic role that used goods commission
set by the retailer plays in determining profits for suppliers. We conclude the paper
by empirically testing some implications of our model using a unique data set from
the online book industry, which has a flourishing secondary market.NYU, Stern School of Business, IOMS Department, Center for Digital Economy Researc
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