News site CNN.com is the latest victim of attacks on some of the Web's most high-profile sites.
"At 7 p.m. EST, we were attacked by hackers. A denial of service attack occurred until 8:45 p.m. We were seriously affected. We were serving content but it was very inconsistent and very little," said CNN PR director Edna Johnson in a statement.
"By 8:45 p.m., our upstream providers had put blocks in place that are shielding us and we are now serving content." Over the last day, attacks have been reported by Yahoo.com, Buy.com, eBay.com and Amazon.com.