"Mock" Traffic Shuts Down Yahoo!
The attack came from multiple locations all at the same time, and because of the breadth of activity, the company could not prevent a shut down.
Yahoo! says they do not know who is responsible for the mock traffic, and verified that no user data was lost and security was not violated.
In addition to user woes, the site's shut down also affects business partners, like EBay, who in the past, was severely affected at its bottom line by similar outages. Yahoo! is the second most visited site on the Internet, following AOL at the number one position.