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Srdjan »apkun


Publications by Srdjan »apkun (bibliography)

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Ion, Iulia, Sachdeva, Niharika, Kumaraguru, Ponnurangam and »apkun, Srdjan (2011): Home is safer than the cloud!: privacy concerns for consumer cloud storage. In: Proceedings of the 2011 Symposium on Usable Privacy and Security 2011. p. 13. http://dx.doi.org/10.1145/2078827.2078845

Several studies ranked security and privacy to be major areas of concern and impediments of cloud adoption for companies, but none have looked into end-users' attitudes and practices. Not much is known about consumers' privacy beliefs and expectations for cloud storage, such as web-mail, document and photo sharing platforms, or about users' awareness of contractual terms and conditions. We conducted 36 in-depth interviews in Switzerland and India (two countries with different privacy perceptions and expectations); and followed up with an online survey with 402 participants in both countries. We study users' privacy attitudes and beliefs regarding their use of cloud storage systems. Our results show that privacy requirements for consumer cloud storage differ from those of companies. Users are less concerned about some issues, such as guaranteed deletion of data, country of storage and storage outsourcing, but are uncertain about using cloud storage. Our results further show that end-users consider the Internet intrinsically insecure and prefer local storage for sensitive data over cloud storage. However, users desire better security and are ready to pay for services that provide strong privacy guarantees. Participants had misconceptions about the rights and guarantees their cloud storage providers offers. For example, users believed that their provider is liable in case of data loss, does not have the right to view and modify user data, and cannot disable user accounts. Finally, our results show that cultural differences greatly influence user attitudes and beliefs, such as their willingness to store sensitive data in the cloud and their acceptance that law enforcement agencies monitor user accounts. We believe that these observations can help in improving users privacy in cloud storage systems.

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