旧手机如何处理方能避免信息泄露？

将手机恢复出厂设置，删除相关内容和软件后，出售自己的旧手机到底靠谱吗？

After restoring the phone to factory settings and deleting related content and software, is it reliable to sell your old phone?

　　“传统的电脑和如今的智能手机，信息存储的原理和规则基本一致，简单的恢复出厂设置和删除文件，并不代表彻底删除了信息。”网络安全专家、奇安信行业安全研究中心主任裴智勇表示，手机上“删除”文件，其实系统只是将该文件的指示路径删除，等于一般人找不到该文件了，然而实质的内容信息依然存储于手机内部。

"Traditional computers and today's smart phones have basically the same principles and rules for information storage. Simply restoring factory settings and deleting files does not mean that information is completely deleted." Pei Zhiyong, a cyber security expert and director of the Qi'anxin Industry Security Research Center Said that "deleting" a file on the mobile phone, in fact, the system only deletes the indicated path of the file, which means that the average person cannot find the file, but the actual content information is still stored inside the mobile phone.

　　“所以，想恢复手机之前的存储内容信息，是可以做到的，而且技术门槛不高。”裴智勇坦言，目前在一些不正规的二手手机回收店，有人会通过这种方式，来恢复手机里的储存信息，比如，手机通讯录、短信等涉及个人信息的内容，再将其进行二次售卖，赚取暴利。

"Therefore, it is possible to restore the previous storage content information of the mobile phone, and the technical threshold is not high." Pei Zhiyong admitted frankly that at present in some informal second-hand mobile phone recycling shops, some people will use this method to restore the mobile phone. The stored information in the mobile phone, for example, mobile phone address book, short message and other personal information content, and then sell it for a second time to make huge profits.

　　业内专家认为，当前，二手手机已成为个人信息泄露的源头之一，形成了一条成熟的灰色产业链条，从中获取的个人信息，可能会被用于垃圾电话、短信乃至电信诈骗。

Industry experts believe that at present, second-hand mobile phones have become one of the sources of personal information leakage, forming a mature gray industrial chain. Personal information obtained from them may be used for spam calls, text messages, and even telecom fraud.

过时电子产品回收再利用是大势所趋。那么问题来了，我们如何才能在保障信息安全的前提下出售、回收自己的旧手机？

Recycling of obsolete electronic products is a general trend. So the question is, how can we sell and recycle our old mobile phones on the premise of ensuring information security?

　　裴智勇建议，首先，旧手机出售尽量到大平台、大型店里进行，尽量避免通过个人渠道或小店。其次，旧手机换下来后，不要着急出售，出售前除了恢复出厂设置、删除老旧文件外，可以选择下载“文件粉碎”类软件，对淘汰手机、电脑进行重复覆盖、复写处理。

Pei Zhiyong suggested that, first of all, the sale of old mobile phones should be carried out on large platforms and large stores as much as possible, and try to avoid personal channels or small stores. Secondly, after replacing the old mobile phone, do not rush to sell it. In addition to restoring factory settings and deleting old files, you can choose to download "file shredding" software to overwrite and rewrite the eliminated mobile phones and computers.

　　“用户可将手机连接至电脑，先将手机内容全部删除，再向手机内写入新的大型文件，反复进行几遍，尽量将其空间占满。”裴智勇说，这样基本就可以保证旧手机内的个人信息和痕迹被彻底清除。

"The user can connect the phone to the computer, delete all the contents of the phone first, and then write a new large file into the phone, repeat it several times, and try to fill the space as much as possible.” Pei Zhiyong said, this basically guarantees the old Personal information and traces in the mobile phone were completely erased.

　　专家建议，手机上尽量不保存敏感、秘密信息，重要信息保存使用后应尽快删除掉，其后经过多次数据覆盖，数据被恢复的几率也将大大降低。

Experts suggest that sensitive and secret information should not be stored on the mobile phone as much as possible. Important information should be deleted as soon as possible after storage and use. After multiple data coverage, the probability of data recovery will be greatly reduced.

From website: http://www.xinhuanet.com/