Just about all notebooks shipped in the last 5 years or more contain a helpful bit of code in the BIOS that allows for remote tracing in case of theft. Unfortunately, it's got serious security holes, allowing it to be used for much more nefarious purposes - like rootkits that survive disk reformatting and OS installation:

http://www.coresecurity.com/content/Deactivate-the-Rootkit

*What* are the guys producing this junk thinking? It's all there supposedly "to help customers" - but I have yet to see an actual service offering that uses this stuff. So right now it's all negatives, no positives.

                                                      -- Jerry

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