IT Security Stack Exchange
IT Security Stack Exchange

Questions tagged [air-gap]

An air gap or air wall is a network security measure

An air gap or air wall is a network security measure that consists of ensuring that a secure computer network is physically isolated from unsecured networks, such as the public Internet or an unsecured local area network.

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Unidirectional continuous data transfer to an air-gapped computer

What would be a way to transfer files in one direction from internet-facing computerA => air-gapped computerB to protect the files on computerB from unauthorised disclosure, short of using an expensive data-diode? Requirements The data transfer…
light108
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How to airgap a smartphone?

I'm looking to use my smartphone purely as a portable computer, with no network functionality, in order to protect my privacy. Is removing the SIM cards from it enough to airgap it? Or do I need to go further? If removing the SIM cards doesn't…
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Software can be audited, is there an equivalent for hardware?

In software, code auditing can be used as a mean to gain trust into a software. Of course closed, proprietary software would complicate this, and require to do reverse engineering. Anyway there seems to be a way for software to eliminate distrust to…
humanityANDpeace
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Air-gap implementation for personal computer use

I recently read over Bruce Schneier's article on setting up an air-gapped computer and am looking to improve my setup (compared to my current "use one Windows PC for everything" model). The main threat I want to protect against is getting hit with…
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How safe are CD's for Air Gapped computers?

It is often suggested, for air-gapped PC's, to use CD/DVD's as a transfer medium between machines instead of USB sticks or portable hard-drives as it is difficult to write data to a CD/DVD without the user noticing. I am wondering if there are any…
NULLZ
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Malware which can bridge air gaps

The following statement is made on the Qubes website: Malware which can bridge air gaps has existed for several years now and is becoming increasingly common. Can someone provide an example of Malware that can bridge air gaps? Are they talking…
CaffeineAddiction
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Is there a GNU/Linux or BSD distribution dedicated to air-gapped computer?

I am currently in the process of setting up an air-gapped computer which will be dedicated to managing cryptographic key (including: generation of GPG key/subkey, management of a small CA, generation of SSH key). I am wondering if there are OS…
Mayeu
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How can I securely and conveniently move keys, certs and other short data across an air gap?

What options are available for transferring data between unix machines separated by an air gap? USB flash drives Optical media eg CDs and DVDs Printed paper and Scanning+OCR QR Code software, displays or printers, and cameras Pen, paper and…
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What can be done to bridge the Air Gap, except autorun?

What can be done to bridge the Air Gap, except autorun? Is there any hardware butterflies that can attack physically isolated Unix/Linux machine in common usb drives, like VSC (Vendor Specific…
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How can using multiple laptops improve security?

My being an admirer of Edward Snowden I've read several books about him. In each book and article there was said that he used four laptops in Hong Kong. Not for storing the documents, but because it was for security and it's a security…
O'Niel
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Adding photos to Truecrypted, airgapped laptop from camera safely

I have a Truecrypted, airgapped (no internet connectivity at all) laptop that I use as a completely secure computer for sensitive files. I want to add images from my iPhone (I know), camera or other device. What is the safest way to do this? I know…
user2450099
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Can an air-gapped PC receive malicious code even when completely clean, apart from all physically attacks?

The Basic question is in the title there are more questions bellow but it is in context of the question in the title...hopefully What i have read is that it can eavesdrop the Airgap PC…
net ist
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Secure online server -> Airgap transport?

I'm facing the issue to develop a system which archives some data, which was available via a web-server some time before (to selected users). Now the question arises on how to securely transport the valuable data from the live / online server to the…
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Will ransomware reach an air-gapped computer?

I'm doing some research and wondered since ransomware allows a user a decryption key- how that would be possible if it is not on a network? 12/23 Edit: After learning how ransomware works I'm now considering prevention methods. Is it possible to…
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Best practices for connecting USB key to secure computer?

This is a bit of a hypothetical, but I am interested in an answer. First, I understand that no one can protect themselves against three letter organizations, so I am really just wondering about best practices. Let's say I have a computer that is not…
Thomas
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