The Master Blaster virus is a malicious program that was developed from the initial Blaster worm. It was repackaged by Jeffrey Lee Parson during 2003. It was also released to infect computers running on MS Windows OS versions across the globe during the same year. The repackaged or reprogrammed Master Blaster virus was then known as Blaster B or LovSan.

This variant of the Master Blaster virus exploited known vulnerabilities of MS Windows OS versions. This activity was similar to other known variants of the Master Blaster Virus. Upon infection, MS Windows-based computers damaged by the Master Blaster virus would then connect to t33kid.com. This website was owned by the programmer of the most recent Master Blaster virus variant, and damaged more than 500000 computers that were part of large corporate networks during 2003. But Parson also registered the aforementioned website under his real name, which evidently resulted to his arrest.

The Master B worm allowed Parson to keep close track of computers infected with the Master Blaster virus variant he had reprogrammed. This meant computers infected with the virus automatically registered its machine IDs and other personal information contained in the computers to Parson’s website, which allowed Parson to monitor the online browsing activities of each infected computer through his website. But with his arrest and the release of MS Windows OS security updates packaged as Service Pack 2, the Master Blaster worm and this variant among others are now unable to penetrate individual computers and networks.