Amazon has had a data outbreak on Wednesday revealing customer names and email addresses

Amazon.com Inc.

AMZN, + 1.42%

suffered a data outage on Wednesday revealing customer names and email addresses on its website, according to media reports. The e-commerce giant confirmed the break but refused to provide details of how many customers were affected or in which countries and regions. The company said that it has solved the problem and informed the affected consumers. The break came just two days before the Black Friday shopping bonanza, one of the company's biggest shopping days of the year. Amazon shares were down 0.7% premarket, but have increased 29.7% in 201[ads1]8, while S & P 500

SPX, + 0.30%

has fallen 0.9%.

Has revealed news sent to your inbox. Subscribe to MarketWatch's free bulletin email. Sign up here.