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Smartphone Apps May Share Info with Advertisers

A lot of smartphone apps can help you out if you let them access your phone's GPS. But even if you give permission, do you know everything they're doing with that information?

启用GPS，智能手机里很多应用程序就能助你一臂之力。不过启用之后，那些应用程序到底干了些什么，你清楚吗？

Some computer scientists wanted to find out. So they modified the Android mobile phone platform to tag all data apps sent from the phone. Then they randomly selected 30 of the most popular Android apps, choosing only ones that require access to the Internet and access to the phone's GPS, camera or microphone. And they played with them, all while tracking the data each app sent out.

计算机科学家倒是很想弄清楚。为此，他们对安卓手机平台进行了改造以标记应用程序从手机中发出的所有数据。他们又随机选择了其中最流行的30个应用程序（这些程序都需要接入网络，启用GPS、照相机或是话筒），然后一边使用这些应用程序，一边追踪各个程序发出的数据。

Turns out 15—half the apps—sent the phone's location to third-party advertisers. Two apps did present user agreements—but they said nothing about sending that data. And a third of the apps revealed the phone's unique ID, sometimes along with the phone number and SIM card serial number. The findings will be presented at an upcoming USENIX Symposium. [William Enck et al., TaintDroid: An Information-Flow Tracking System for Realtime Privacy Monitoring on Smartphones]

追踪结果：15个，也就是一半的应用程序将手机的方位发送给了第三方广告商。2个程序虽然开启了，但并没有发送数据。三分之一的程序发送了手机特有ID，有时甚至手机号码和SIM卡序列号也会被发出去。这些发现将在即将举行的UNIX用户协会讨论会上予以发表。

The researchers won't say which apps committed the worst offenses. But there’s a good chance you could have some of the apps on your smartphone. And if one of them asks for your location, you can opt to have it mind its own business instead of yours.

研究人员不会透露哪些应用程序最易泄露用户信息，但你的手机里很可能安装了其中的一部分。假如某个应用程序要求获取你的方位信息，那你大可以选择无视掉它~

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