The Sasser virus is yet another computer virus that crippled thousands of computers in it’s day.
Sasser was written by a 17 year-old German student, Sven Jaschan, back in 2004.
(Jaschan also admitted writing another virus, Netsky.AC as well)
Unlike many other viruses of the time, Sasser did not spread through email, and did not require any human interaction in order to continue spreading.
Instead, it infected computers by using vulnerabilities in both Windows 2000 and Windows XP machines known as the RPC (Remote Procedure Call) exploit – the same technique that was used by the Blaster virus.
Sasser successfully shut down thousands of computer servers and networks in just a few days.
Once it infected a computer it was programmed to access the Internet in order to search out other machines so that it can infect them too.
Read more : Malware That Changed The World