Nimda
Nimda is a computer virus that occurred in September 2001. It happened in the US, Europe and Latin America at the same time, and in just 22 minutes, the most widespread malicious virus on the Internet caused huge economic losses. The Nimda virus targets PCs using Windows-based servers and infects the server through files. The name Nimda seems to have reversed 'admin' which means manager, but it was not revealed.