https://qooah.com/2012/03/01/nsa-%e6%b8%ac%e8%a9%a6%e8%b6%85%e7%b4%9a%e5%ae%89%e5%85%a8-android-%e6%99%ba%e8%83%bd%e6%89%8b%e6%a9%9f/