BullGuard Limited, founded in 2001 by Morten Lund and Theis Søndergaard, is a private company. Headquartered in London, UK, BullGuard has operations in more than six countries.

The first version of BullGuard was released in June of 2002. By early 2003 more than 3 million users had installed BullGuard. By 2006 this had risen to more than 16 million downloads and the company had products for desktop PCs, mobiles and P2P networking, such as Kazaa.

The latest version 8.0 incorporates Antivirus, Firewall, Antispyware, Spamfilter, Backup and Support software.