All deals are done through private chats so you can buy and sell the safe way.

所有的交易都是通过私人聊天这样做，你可以购买和出售的安全方法。

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Last week, Facebook scrambled to fix a security breach that allowed users to see their friends' supposedly private information, including personal chats.

上周Facebook紧急修复了其安全漏洞，该漏洞允许用户浏览好友的隐私信息，包括私人聊天记录。

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Later, Facebook inadvertently exposed users to the private chats of other users for a couple hours.

FORBES: Busted: Facebook Gave Advertisers Names And Ages Of People Who Clicked Ads

Finally, this week, Facebook inadvertently exposed users to the private chats of other users for a couple hours.

FORBES: Facebook Blames Riot Over Privacy On Media, Says Users "Love" The Changes

Offensive lineman Alex Boone said Harbaugh has implored him to read the book and team officials say Harbaugh touts it in private chats.

WSJ: The Coach (Jim Harbaugh) and the Egghead (Andy Grove)