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Unsafe Exposure Analysis of Mobile In-App Advertisements

Unsafe Exposure Analysis of Mobile In-App Advertisements. Offense: Rachel Stonehirsch. Android Security Permission Model. Android Security Permission Model Issues . Android’s current system is unable to determine the difference between an app and an ad library.

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Unsafe Exposure Analysis of Mobile In-App Advertisements

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  1. Unsafe Exposure Analysis of Mobile In-App Advertisements Offense: Rachel Stonehirsch

  2. Android Security Permission Model

  3. Android Security Permission Model Issues • Android’s current system is unable to determine the difference between an app and an ad library. • Ad libraries embedded in an app will undermine Android’s security system. • Inherit the permissions granted to an app. • Collect personal information and provide it to advertisers.

  4. More Android Security Permission Model Issues • Ad libraries are given the same permissions as the apps that contain the ad libraries. • No solution is presented to isolate permissions granted to an app from permissions granted to an ad library.

  5. Data Does not Lead to a Solution to Protect User Privacy • Conclusion mentions need for a change the way existing ad libraries are integrated into apps. • How? • Where is the experimental data that points to a solution? • Approaches that have attempted to address the issue are dismissed and no alternative is presented.

  6. Other Methods that Address User Privacy • H. Haddadi, P. Hui, and I. Brown. MobiAd: Private and Scalable Mobile Advertising. In Proceedings of the 5th ACM International Workshop on Mobility in the Evolving Internet Architecture, MobiArch ’10, pages 33–38, September 2010. • S. Guha, B. Cheng, and P. Francis. Privad: Practical Privacy in Online Advertising. In Proceedings of the 8th USENIX Conference on Networked Systems Design and Implementation, NSDI ’11, March 2011.

  7. Ad Libraries • Ad libraries request information that is not useful to them. • What is the basis for your claim that an app’s user cannot determine which ad libraries the app contains? • Your paper analyzes ad libraries that exist within 10,000 apps. • Discovered which ad libraries are in which apps.

  8. Lack of Evidence • Issue with ad libraries is that they fetch and load dynamic code. • Mention that there are 5 ad libraries that have this unsafe behavior. • Which five? How was this detected?

  9. Tool Performance • Tested performance of AdRisk on 5 ad libraries. • 1/20th of the sample size. • Why was the performance measured on 5 ad libraries, and not on all 100 ad libraries.

  10. Summary of Problems With this Paper • Make statements about results from research but fail to provide a suggestion for a solution. • Often fail to back up statements with actual results. • Lack of evidence. • Tool performance.

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