There could, in theory, be a malicious machine on the internal network that was previously infected, which is now acting as command and control. So if you didn't know which one it was…
That's generally a good idea, however, there can be reasons not to do it.
The device could be infected in a way that it won't turn on again.
You might have an isolated management network that allows you to monitor the device and traffic (naturally ripping all cables also disconnects the management network).
You two are overlooking the most important thing. It might be fun to crazily rip out the cables then make a junior guy go trace and repatch it all. The opportunity to legitimately do that doesn't come along often.
There could, in theory, be a malicious machine on the internal network that was previously infected, which is now acting as command and control. So if you didn't know which one it was…
Turn of the power, no need to rip anything
Use a bomb. No need to take out the lights.
Nuke it from orbit. It's the only way to be sure.
It's better to throw it away into a black hole.
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That's generally a good idea, however, there can be reasons not to do it.
The device could be infected in a way that it won't turn on again.
You might have an isolated management network that allows you to monitor the device and traffic (naturally ripping all cables also disconnects the management network).
And whatnot. But generally I agree.
You two are overlooking the most important thing. It might be fun to crazily rip out the cables then make a junior guy go trace and repatch it all. The opportunity to legitimately do that doesn't come along often.
Where's your sense of drama???