Stuxnet is a Microsoft Windows computer worm discovered in July 2010 that targets industrial software and equipment.
What is Stuxnet:
Stuxnet is a computer worm that targets the types of industrial control systems (ICS)
that are commonly used in infrastructure supporting facilities (i.e. power plants, water treatment facilities, gas lines, etc).
What does Stuxnet do:
Stuxnet is designed to programmatically alter Programmable Logic Controllers (PLCs) used in those facilities. In an ICS environment, the PLCs automate industrial type tasks such as regulating flow rate to maintain pressure and temperature controls.