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Y3K_Rat

Family Author(s) From Date Has Image
Y3K_Rat 2k5 (a) Server -/SHA\-
Y3K_Rat 1.0 -/Chucky-\- and [Firelarm] May 2000
Y3K_Rat 1.1 -/Chucky-\- and [Firelarm] June 2000
Y3K_Rat 1.2 -/Chucky-\- and [Firelarm] July 2000
Y3K_Rat 1.3 -/Chucky-\- and [Firelarm] August 2000
Y3K_Rat 1.4 (a&e) -/Chucky-\- and [Firelarm] October 2000
Y3K_Rat 1.4 -/Chucky-\- and [Firelarm] November 2000
Y3K_Rat 1.4b -/Chucky-\- and [Firelarm] November 2000
MY3K_Rat 1.5 -/Chucky-\- and [Firelarm] January 2001
Y3K_Rat 1.6 -/Chucky-\- and [Firelarm] May 2001
Y3K_Rat 1.6 MegaSecurity July 2001
Y3K_Rat 1.7 (b) -/Chucky-\- and [Firelarm] August 2001
Y3K_Rat pro 0.1 -/Chucky-\- and [Firelarm] August 2002
Y3K_Rat pro 0.2 -/Chucky-\- and [Firelarm] November 2002
Y3K_Rat 2k5 RC 1.0 -/SHA\- June 2005
Y3K_Rat 2k5 RC 1.1 -/SHA\- November 2005

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.