Heather Kelly reports:
For a period of four days in May, about 14 million Facebook users around the world had their default sharing setting for all new posts set to public, the company revealed Thursday.
The bug, which affected those users from May 18 to May 22, occurred while Facebook was testing a new feature.
After Facebook employees discovered the bug, the company went back and changed the privacy settings for all posts shared by those 14 million users during that time.
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