Details are emerging from the massive cyber attack that hit South Korea and the U.S. earlier this month -- showing security researchers what went right in stemming the tide.

Initially, the South Korea government blamed North Korea for the attack, though no solid evidence has yet been put forth to support that claim.

In the meantime, researchers are learning precisely how large the attack had been and how it had been achieved.

As it turns out, South Korea, which is one of the most wired nations on Earth, was in part a victim of its own high-speed broadband network.

"The significant part of the attack was a DDoS [Distributed Denial of Service attack] that originated from about 30-40 thousand bots in South Korea," Avi Chesla, vice president of security products at security vendor Radware, told InternetNews.com. "Korea's Internet infrastructure, which allows very high bandwidth in the main part of the country, allowed these bots to generate a very high-volume attack."