According to an editorial published at the site, the attacks included a Distributed Denial of Service (DDoS) attack, malicious attempts at gaining access to restricted parts of the site, spamming forums and chat rooms and hacking into admin restricted accounts.
There have also been numerous personal threats made against eBaum's World staff members and its offices were vandalized.
The reason for all the abuse is apparently an animation that was published by the site. It was sent in by someone who claimed to be the original author. However, the "cyber-terrorists" claim the animation was created by an individual they represent and used without permission.
A spokesman for the site said that if the material turns out to belong to another person they will take it down, but so far no one has come forward. In the meantime the attacks continue.
More here. µ