My laptop is off whenever not in use, and obviously doesn’t have a sim. Is there any point to get a Faraday Bag for it?
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The same as a tin foil hat. Even better an Faraday Bag for your router
https://www.theregister.com/2025/07/22/whofi_wifi_identifier/
Is this work laptop? then yes, put that thing in there along with the corpo cell phone. If it is your own laptop and you installed the OS, ideally linux, then it is fine.
You could try running tails on your laptop. Nothing guarantees resting privacy like removable boot media
It’ll protect it from EMP’s!
Nope
Technically, if it’s completely 100% off, there’s no electricity running through its circuits and CPU, then there’s no way any program of sorts can actually, physically run.
The point of a Faraday cage is to isolate what’s inside from any EM interference.
If there are no active circuits running, then there’s absolutely nothing to interfere with.
Just because the laptop is powered down does not mean that no circuits are getting power. Wake on LAN/WLAN is a thing, and most devices without a physical power switch, (a power bitton is not a switch), mean that there is a miniature power draw listening for that signal. The manufacturer might have other bits that are still active as well, you can’t be sure. If your ultra paranoid about state level actors it might be a good idea. If you’re just worried about somebody swiping your credit card number or something, probably overkill.
It’s WoL, not WLAN. WLAN is Wireless Local Area Network.
I believe the previous post was talking about Wake on LAN (WoL) and Wake on WLAN (WoWLAN) which are separate things.
It Depends.™
On what exactly? If you work for a 3-letter government agency and your laptop was a gift from your new friend Sergei Notaspy who you met on vacation in Moscow?
On OP’s needs and threat model.
I’m asking what are the scenarios where there is a point to having one, and if there are.
There is no conceivable risk to a turned off laptop, that could be fixed by a faraday bag, that is not dwarfed by having a functional networked laptop.
I can’t think of one.