直到最近，你还可以在Facebook上搜索电话号码或电子邮件地址，并找到与之相关的Facebook帐户。现在不是这样了。

当有人在聚会上给你号码，你忘了他们的名字，或者你需要整理数百个约翰·史密斯，找到你周三和你打垒球的那个时候，这个小把戏很好。那么，为什么Facebook会删除一些如此令人难以置信的有用东西呢？

因为事实证明骗子也很欣赏这一小生命黑客。这是瑞德·琼斯，为Gizmodo写的：

…imagine you’re a hacker who bought a huge database of phone numbers on the dark web. Those numbers might have some use on their own, but they become way more useful for breaking into individual systems or committing fraud if you can attach more data to them. Facebook is saying that this kind of malicious actor would regularly take one of those numbers and use the platform to hunt down all publicly available data on its owner. This process, of course, could be automated and reap huge rewards with little effort. Suddenly, the hacker might have a user’s number, photos, marriage status, email address, birthday, location, pet names, and more—an excellent toolkit to do some damage.

黑客又一次毁掉了一切。我们这些非黑客现在该怎么办？

相关：如何反向查找电话号码

现在仍然有反向查找电话号码的工具，包括Google和老式的白页。唉，没有一个比Facebook更有用了。我猜你只需要发短信给那个号码，也许“新电话号码”会给你一个名字？（免责声明：本文作者已经结婚十年，在一家技术指导网站工作，在任何情况下都不要接受他的现代约会建议。）