After taking down the websites of Visa, Mastercard and others,...

After taking down the websites of Visa, Mastercard and others, supporters of Wikileaks threatened to knock Amazon.com offline. "Anonymous," the loose-knit group of hackers behind the cyber-attacks, announced an assault on the Amazon website as part of what they are calling "Operation Payback." (Dec. 9, 2010) Credit: Getty Images

LONDON (AP) — Internet retailer Amazon is denying that pro-WikiLeaks hackers were responsible for the failure of its websites in several European countries.

Amazon sites were offline for about half an hour in Britain, France, Germany and other countries late Sunday, leading to speculation they could have been targeted by online “hacktivists.”

But Amazon said Monday that the problem “was due to hardware failure in our European data center network” and not a hacker attack.

A loose-knit group activists who use the name “Anonymous” has launched attacks on companies that have cut ties to secret-spilling site WikiLeaks, including Visa, MasterCard and PayPal.

But they said last week that Amazon was too big a target to bring down.

Get the latest news and more great videos at NewsdayTV Credit: Newsday

Updated 19 minutes ago After 47 years, affordable housing ... Let's Go: Williamsburg winter village ... Get the latest news and more great videos at NewsdayTV

Get the latest news and more great videos at NewsdayTV Credit: Newsday

Updated 19 minutes ago After 47 years, affordable housing ... Let's Go: Williamsburg winter village ... Get the latest news and more great videos at NewsdayTV

SUBSCRIBE

Unlimited Digital AccessOnly 25¢for 6 months

ACT NOWSALE ENDS SOON | CANCEL ANYTIME