Now they have revealed dozens of vulnerabilities in the supervisory, control and data acquisition (SCADA) software that much national infrastructure and manufacturing industry depends upon.

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On Monday, Dillon Beresford, an analyst for security auditing firm NSS Labs, took aim at Siemens in a message to a mailing list devoted to supervisory control and data acquisition (SCADA) software used in physical systems like power plants and factories.

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However, other researchers have found many weaknesses in the software used to control Scada systems via the net.

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The spy program is a sophisticated rootkit designed to steal data from SCADA networks, the type of software that control energy utilities, transportation, and other vital systems.

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