Amazon.com's e-mail names and addresses "had unintentionally revealed" on its website, only before days of Black Friday shopping.
In a statement on Wednesday, Amazon said, "We have set the issue and informed customers who could have been affected."
The e-commerce guy did not tell how many people were affected or how their information could be seen.
Amazon customers in the United States and Europe who had received the notifications by email on Wednesday about the cut on the notices on social media. News released on Amazon first brokered by BetaNews.
According to Amazon, the glitch did not compromise its website or back systems.
In his customer notices, the company said they did not need to change their passwords.