Archive Helmet Icon Archive A Reconstructed © MegaSecurity Database

Bifrost

Family Author(s) From Date Has Image
Bifrost 1.0 ksv April 2004
Bifrost (b) Server ksv July 2004
Bifrost 1.1 ksv September 2004
Bifrost 1.1 Chinese edition ksv September 2004
Bifrost 1.1.01 ksv December 2004
Bifrost 1.1.01 v2 ksv March 2005
Bifrost 1.1.02 ksv June 2005
Bifrost 1.1 Chinese edition v2 ksv July 2005
Bifrost Reload 0.0.01 ksv January 2006
Bifrost 1.2 ksv December 2006
Bifrost 1.2.1 ksv January 2007
Bifrost 1.2.1 VerY SecReT ksv June 2007
Bifrost 1.2b Private ksv July 2007
Bifrost 1.2d ksv July 2007
Bifrost 1.1.03 ksv October 2007
Bifrost 1.2 Private ksv May 2008
Bifrost 2.0 Special La VozR November 2008

This archive is an almost-complete reconstruction of the legendary Mega Security (also known as Kobayashi), a premier 90s-era "Trojan Database" where malware authors once showcased their work. After a decade offline, the site was brought back in August 2024 by its original creator, MasterRat, who authorized the Malware Gallery to host this modernized, searchable version of the collection. While the original site remains available for those seeking a nostalgic, old-school experience, we are proud to continue its legacy here. Full credit and thanks go to MasterRat and the retired Mega Security staff for their years of dedicated work in cataloging these historical samples.