At last, through the results of debug and analysis by the actual system, sum up the characteristics and lacks, pointed out the further improvements and outlook.

最后，通过对实际系统调试和分析的结果，总结了该系统的特点与不足，指出了进一步改进的方向和展望。

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Privacy researcher Chris Soghoian criticized the company for still not having a chief privacy officer (and pointed out that Facebook lacks one as well).

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