各大互联网应用是如何获取用户信息的？iPhone 如何避免隐私泄露？
随着互联网服务的发达，逐渐涉及到生活的方方面面，大家对「软件监听」这个话题越来越敏感，无论国内国外的互联网公司都曾因为隐私问题而陷入纠纷中。
首先，产生的数据量过于庞大，软件无时不刻地监听意味着每个用户都在同时向应用拨打电话，同时应用还需要处理庞大的订单信息，现阶段的网络与服务质量无法达到这一水平；其次，通过语音监听可获得的有效信息稀少，干扰因素过多，加上方言翻译等问题，语音监听不免有些效率过低。
不过，仍有很多用户好奇互联网服务公司是如何预先判断用户的需求呢？
其实很简单，互联网头部公司之间都存在不同程度的合作，共享用户数据是很普遍的事情。比如曾在地图导航软件中查询前往草莓园的路线，地图软件就获得了这一信息，同时输入法也获取这一信息，或许你同时还在浏览器中查询附近草莓园的评价，浏览器也获取到了搜索记录，这也就是某些应用可以精准推荐的原因。
除此以外，根据经常购买的店铺、搜索记录，以及用户信息、性别、年龄和收货地址，也可以大致勾勒出用户画像，推荐有可能喜欢或购买的商品及服务。可以说用户在互联网的任何行为，都有可能被广告商运用并进行分析。这大概就是享受便利服务的代价吧。
如何保护好自己的隐私？
● 使用原生输入法
尽量使用 iOS 系统自带的输入法，可以在一定程度上避免隐私被记录泄露。
● 尽量避免授权应用永久使用隐私信息
对于不经常使用的应用，不必要的应用授权可以避免授予，尽量不要选择「永久」。
● 防止广告追踪
前往「设置」-「隐私」-「广告」，可以开启「限制广告追踪」，iPhone 将返回应用无效的数据，无法获取用户真实信息。
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