Although IBAC allows fine-grained access control, it is not suitable for managing hundreds of permissions. All these permission management applications follow an Identity-Based Access Control model, i.e., the user has to control every permission for every installed application. Additional permission management systems (such as Privacy Guard Manager, Permission Master, XPrivacy, or DonkeyGuard) can be installed to enhance the basic native Android system by allowing users to modify permissions after the installation of applications. Permission management is very limited: either you authorize everything or you cancel the installation. Until version 5.x (included), installing an application is equivalent of granting all the permissions requested by the application (more than 50% of Android devices are still running version 4.x or 5.x in early 2017 4). On Android, controlling access to applications is complex. The privacy policy of Yo states that the company collects personal and activity data, shares them with companies they trust, and keeps all these data indefinitely. However, Yo also asks to have access to the identity information, the files, the pictures, and the camera. Access to the contact list and the location seems coherent. For instance, Yo 3 is a free application whose unique feature is sending a notification with the word “Yo” and the current location to user’s friends. Each of these dangerous permissions shall be carefully chosen since some applications, not considered as trojan, collect and sell users’ data under the guise of providing some services. Multiplying it by the number of applications per device results in a total of 372.7 permissions and 184 of which are highly dangerous to manage on each device. This study showed that an Android application requests an average of 11.4 permissions, 5.72 of which can directly harm privacy. We performed an analysis of the 50 most downloaded free applications on the Google Play Store. A survey from Google and TNS/SOFRES in 2013 shows that French people have installed an average of 32.7 applications on their smartphone 2 most of which are free. These devices being more and more powerful, they include more and more applications. According to Gartner 1, “the smartphone market has reached 90 percent penetration in the mature markets of North America, Western Europe, Japan and Mature Asia/Pacific” in 2016. Smartphones have a predominant place in this digital world. Many researchers have taken a more balanced view and propose solutions to control the collection, analysis, and dissemination of personal information, as well as solution to avoid intrusion/decisional interference. Some people even wonder if privacy still exists arguing that our digital life is either shared or public. If at the end of the nineteenth century privacy was “The right to be let alone”, it is hard to isolate yourself in our digitalized world that has been created to facilitate the flow of information. Finally, we prove this whole approach is more efficient than current permission management system by comparing it to Privacy Guard Manager.ĭefining privacy and thus protection of privacy is difficult. Our learning algorithm is compared to two other well-known approaches to show its efficiency. Thus, we present a permission management system for Android devices that (1) learns users’ privacy preferences with a novel learning algorithm, (2) proposes them abstract authorization rules, and (3) provides advanced features to manage these high-level rules. However, such models are more complex to handle by non-technical users. Scalability of IBAC is a well-known issue and many more advanced access control models have introduced abstractions to cope with this problem. As a result, these users must manage hundreds of permissions to protect their privacy. A survey from Google in 2013 showed that, on average, french users have installed 32 applications on their Android smartphones. If this approach was suitable when people had only a few games (like Snake or Tetris) installed on their mobile phones, the current situation is different. Today, permissions management solutions on mobile devices employ Identity Based Access Control (IBAC) models.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |