更新还是不更新:来自Android应用演变的两年研究见解

Vincent F. Taylor, I. Martinovic
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引用次数: 51

摘要

尽管b谷歌Play Store中有超过1,900,000个第三方Android应用程序,但人们对它们的安全和隐私特征(如危险的权限使用和它们包含的漏洞)如何随着时间的推移而演变知之甚少。我们的研究是双重的:我们在两年的时间里,每季度对b谷歌Play Store进行快照,以了解应用程序的使用权限是如何变化的;我们分析了3万个应用程序,以了解它们的安全和隐私特征在两年内是如何变化的。根据我们的调查结果,我们估计b谷歌Play Store中每三个月就有超过35,000个应用请求额外的危险权限。我们的统计数据表明,免费应用和流行应用在更新时更有可能要求额外的危险权限。令人担忧的是,我们发现Android应用程序并没有随着更新而变得更安全。在许多情况下,应用程序更新会增加应用程序中包含的不同漏洞的数量,特别是对于流行的应用程序。最后,我们向利益相关者提出了改善Android生态系统安全性的建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
To Update or Not to Update: Insights From a Two-Year Study of Android App Evolution
Although there are over 1,900,000 third-party Android apps in the Google Play Store, little is understood about how their security and privacy characteristics, such as dangerous permission usage and the vulnerabilities they contain, have evolved over time. Our research is two-fold: we take quarterly snapshots of the Google Play Store over a two-year period to understand how permission usage by apps has changed; and we analyse 30,000 apps to understand how their security and privacy characteristics have changed over the same two-year period. Extrapolating our findings, we estimate that over 35,000 apps in the Google Play Store ask for additional dangerous permissions every three months. Our statistically significant observations suggest that free apps and popular apps are more likely to ask for additional dangerous permissions when they are updated. Worryingly, we discover that Android apps are not getting safer as they are updated. In many cases, app updates serve to increase the number of distinct vulnerabilities contained within apps, especially for popular apps. We conclude with recommendations to stakeholders for improving the security of the Android ecosystem.
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