Kaspersky’s director of global research & analysis, Costin Raiu, told Reuters on Wednesday that his team has gathered evidence that shows the same platform that was used to build Stuxnet and Duqu was also used to create at least three other pieces of malware.

Raiu said the platform is comprised of a group of compatible software modules designed to fit together, each with different functions. Its developers can build new cyber weapons by simply adding and removing modules.

“It’s like a Lego set. You can assemble the components into anything: a robot or a house or a tank,” he said.

Kaspersky named the platform “Tilded” because many of the files in Duqu and Stuxnet have names beginning with the tilde symbol “~” and the letter “d.”