Sami Hyrynsalmi

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Ville Leppänen38
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Mark E. J. Newman16
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15Shohreh Hosseinzadeh
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App Store, Marketplace, Play! An Analysis of Multi-Homing in Mobile Software Ecosystems
Multi-homing, a strategy where a developer is publishing products for multiple platforms, is studied in this paper using descriptive analysis. The data of over 850,000 applications and their developers were collected from Apple App Store, Google Play, and Microsoft's Windows Phone Marketplace. The developers publishing for several software ecosystems were… (More)
Sources of value in application ecosystems
Mobile application stores have revolutionised the dynamics of mobile ecosystems. Research on mobile application ecosystems has been significantly driven by data that is focused on the visualisation of an ecosystem's dynamics. This is a valuable step towards understanding the nature of the ecosystems, but it is limited in its explanatory power. Thus, a… (More)
Technical Debt and the Effect of Agile Software Development Practices on It - An Industry Practitioner Survey
—A major reason for the popularity of agile and lean software methods is their capability to function in resource scarce and requirement erratic environments. Both of these characteristics cause accumulation of technical debt, something that is the end result of either intentional or unintentional decisions. The ability of these methods to function with… (More)
Agile methods for embedded systems development - a literature review and a mapping study
There is a wide area of applications that use embedded systems, and the number of such systems keeps growing. The required functionality and complexity of embedded systems are also constantly increasing, and development of such products is becoming increasingly harder. This requires new thinking on the product development processes, and one such emerging… (More)
Symbol diversification of linux binaries
In this paper, we advocate large-scale diversification as a method to protect operating systems and render malicious programs ineffective. The idea is to diversify all the indirect library entry points to the system calls on a specific computer. As a result, it becomes very difficult for a piece of malware to access resources. The diversification of… (More)
A Post-Mortem Empirical Investigation of the Popularity and Distribution of Malware Files in the Contemporary Web-Facing Internet
This short empirical paper investigates a snapshot of about two million files from a continuously updated big data collection maintained by F-Secure for security intelligence purposes. By further augmenting the snapshot with open data covering about a half of a million files, the paper examines two questions: (a) what is the shape of a probability… (More)