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Reports indicate that an unnamed website was the target of one of the biggest Internet attacks ever recorded last week, reaching 100 Gigabits of traffic at its climax.

The distributed denial-of-service (DDoS) attack on September 24 lasted just nine hours, but ultimately failed to take the targeted site offline thanks to the owner’s cloud service provider Incapsula.

“The most outstanding thing about this attack is that it did not use any amplification, which means that they had 100 Gigabits of available bandwidth on their own. The attack lasted nine hours, and that type of bandwidth is not cheap or readily available,” Incapsula co-founder Marc Gaffan said.

Gaffin was surprised that the attackers leveraged so much bandwidth in a targeted attack, but given that the site would not succumb to the traffic surge, this probably played a factor in the magnitude of the attack.

“In a typical DDoS, an attacker will turn up the gauges on bandwidth as much as possible until they are able to break down a site. There is no point in throwing 100 Gigabits of traffic against a site that will go down with 10 Gigabits,” Gaffan said.
“Our assumption is the attacker realized that they were getting blocked and that there was no point in continuing to throw rocks at a tank if the rocks were just going to bounce off,” Gaffan continued.