Wait, you don't wipe the hard drive after connecting it to a computer? How do you prevent BIOS-resident viruses from spreading into other systems?

Anyway, to find the affected hardware, you would probably need to set up a trap on your router, so it will log whatever local IP is talking to the lo-jack systems. I'd rather not be any more specific just in case. This system does not send anything beyond location information until the system is reported stolen. I don't think you would have any grounds for a law suit - at worst, if your clients' data was exposed as a result of this, you might be liable, since you caused the software to come into the network. That is just an opinion though. IANAL.

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The best way to learn anything, is to question everything.