Controlling spread of Stuxnet

New application note:  Preventing the spread of the Stuxnet worm in both Siemens and non-Siemens network environments.

One of the key things Byres Security have learned in their test lab (and confirmed by INL at the ICSJWG  - US Industrial Control Systems Joint Working Group - meeting last week) is that the Stuxnet worm is very aggressive once it accidentally gets into a control system. And once it is in, it is almost impossible to remove, since the worm just keeps popping up as it re-infects PCs.

We have a number of links to Stuxnet related articles at the bottom of our blog "Stuxnet – not from a bored schoolboy prankster!"

To counteract this they wanted to create a document to give specific guidance on how to prevent Stuxnet and Stuxnet-like worms from migrating between ANSI/ISA-99 security zones in a control system. Of course the configuration examples they use are based on their Tofino Industrial Security Solution, but the concepts are generally applicable to other firewalls.

The paper (pdf) is available on the Tofino Blog from Monday 7th September 2011.

Flexible temperature sensor technology demo

Moore Industries-International has released an eight minute digital video production, "Temperature Sensor Technology Demo Featuring Moore Industries WORM." It features a product demonstration, competitive analysis and installation instructions for the WORM, a unique flexible temperature sensor.

It also features a review of the sensor that has a rigid tip and stainless steel spring. The presenter, Peter Welander, first demonstrates what is necessary to get the best measurement from a temperature sensor. Next, the WORM is highlighted as a simple yet effective solution for temperature measurement in a flexible sensor that provides protection for the sensor element and wiring and provides a faster response time.

The kit displayed in the video includes everything needed to make a conversion from a rigid style temperature probe and install it in nearly every application. 

There is also a demonstration of a full installation for a new WORM flexible temperature sensor—an installation that occurs without taking off the housing because of the WORM’s flexibility.

Advantages highlighted in the video include the smaller diameter and faster response time, as well as the WORM’s ability to be cut to any length, eliminating the need to stock or order exact sizes since the assembly is “one size fits all.”

"Temperature Sensor Technology Demo Featuring Moore Industries WORM,” is available free through the Moore Industries corporate website. On the WORM video landing page, you can also download the WORM data sheet, get a two-page overview by downloading the free PDF “Get Rid of Rigid: Get the WORM Flexible Temperature Sensor,” and link directly to Moore Industries Temperature Sensors, Transmitters and Assemblies Selection Guide.