两件同时发生的事可能导致许多错误：可能被判有罪的人实际上并没有犯罪。
And those two things together can lead to a lot of mistakes: potentially convicting people of crimes that they weren't really guilty of.
更糟的是，人们可能会透露自己的个人信息而使用它，这可能会导致犯罪。
Worse still, people may reveal their personal information while using it, which may lead to crimes.
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