Questions tagged [hardware]

For attacks against, or best practices for physical components of an Information Technology system. It can consist of network equipment, servers, CPUs, hardware security module, smartcards, etc. When using this tag, also include an additional tag for the specific type of hardware.

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1answer
101 views

Are wedge attacks on EMV cards still viable?

I was looking around to see if wedge attacks on EMV cards are still viable or a solution has been implemented, and if so, have attackers found another way around the solution? The latest literature or ...
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1answer
98 views

Questions about A Monitor Darkly

In his presentation, A Monitor Darkly, Ang Cui demonstrates how to manipulate images on the monitor by getting the firmware to execute commands embedded in a pixel contained in an image being ...
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1answer
241 views

Can I trust a used motherboard purchased from a seller in China? [duplicate]

The ASUS motherboard in an older PC I own failed. I purchased a replacement from a vendor on eBay, shipped from China (Shenzhen). Only after receiving the motherboard did it occur to me to wonder ...
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1answer
63 views

How to detect software and hardware impairment? [closed]

How can I know if a pc has a backdoor in bios, and how to know if there is an hardware malicious impairment?
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2answers
87 views

Is it possible to create a hardware 'Plug and Play' TOR proxy?

Is there a way to use a device like a raspberrypi to create a kind of 'Plug and Play' TOR proxy? Ideally, a device would exist with an ethernet port as input and ethernet cable or USB as output which ...
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0answers
38 views

Best practices for checking security risks on used devices [closed]

If you are buying used device, laptop or game console, or a smartphone - what are the best practices for checking it’s security? How to check if device’s HW wasn’t modified or it is not coming with ...
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2answers
113 views

Hardware components based on which to generate password

I want to generate a password for a Keystore in java on Windows platform. I would like to make a HASH out of some hardware information from my computer and some salt. My question is: which hardware or ...
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14answers
14k views

Emergency method to erase all data off a machine within seconds

Imagine you are carrying highly sensitive information with you, maybe on a mission in a war zone. You get in an ambush and quickly need to erase all the files before they fall in the wrong hands. This ...
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0answers
83 views

Can I view the format history of a usb key?

Is there a way to view when changes were made to a USB key, such as when the USB key was formatted and/or when some files were transferred? I have seen this previous stackexchange question File system ...
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1answer
52 views

Cyber Security in Hardware Products? [closed]

I am currently working on a product similar to smart locks that work with BLE identification. I can handle the hardware of the product very well (mechanics / electronics / embedded software), however, ...
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0answers
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What is the current (mid-2020) status of hardware rootkit/malware and possible detection/monitoring?

I've posted a question (link) related to a potential compromised computer via SSH access with root user. Although no evidence of a break-in, I'm considering extended measures to ensure (as much as ...
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0answers
64 views

Can a headphone or earbud (bluetooth or wired) transmit malware between computers? [duplicate]

I have an old computer and I am sure it has trojan or malicious code but after that I bought new one. The problem is I did not change my old headphone that I used in my old computer and I plugged it ...
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1answer
79 views

iCloud deletion

If I delete photos which are stored in iCloud from my phone. (Which is also linked to my iPad) I know the data is then made ‘free space’ but is still on the phone In some format. If I delete it from ...
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1answer
58 views

Protect USB from reading by using PC identity

Is there any way (software or hardware solution) to create a usb drive that can make its contents readable only on specific PCs using their hardware serial numbers?
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1answer
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Is being able to access /proc/ in Linux a security breach?

As a user, I can run ls proc and read the /proc directory of the hosting server and read most of the data inside it (~90%). > ls /proc 1 acpi cpuinfo execdomains ioports kmsg mdstat net scsi sys ...
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1answer
42 views

Are Thunderbolt-enabled computers without Thunderbolt ports vulnerable to Thunderspy?

Could these two attack scenarios exploit the recently publicized vulnerability? Using a Thunderbolt adapter like an USB-to-Thunderbolt adapter on a computer without any Thunderbolt port Temporarily ...
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2answers
189 views

Why did I never see those “spy signal jammers” for sale?

I recently watched a 1980s computer television programme about the problems of spying. Basically, they showed how anyone could buy relatively cheap and common hardware and then be able to sit outside ...
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1answer
47 views

Understanding the Secure Multi-party circuit for Stable Matching

I am reading the following paper: MPCircuits: Optimized Circuit Generation for Secure Multi-Party Computation link of paper I have following questions: why Preference of group1 starts from L_0 ...
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0answers
176 views

Prometheus node_exporter Metrics file discovered [closed]

I found a 'Metrics' file during a test containing: # HELP go_gc_duration_seconds A summary of the GC invocation durations. # TYPE go_gc_duration_seconds summary go_gc_duration_seconds{quantile="0"} 0....
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0answers
45 views

How to use potentially malicious hardware safely

I know the methods for running possible malicious programs safely but how do I keep my computer secure when I need to use a tool that might be malware. I cannot run it in a sandbox or virtual machine ...
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1answer
98 views

USB 3.0 write protection switch question

I bought a USB 3.0 flash drive with a write protection switch for use with a Linux live distribution. My question is, once the OS is installed and running, I tested it and I can still install programs ...
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0answers
147 views

Hardware vulnerabilities vs software threats

What are the key differences between them? I find both of them would also be able to retrieve data from the host system and both also could cause harm. I do not understand why there are people who ...
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0answers
95 views

Is it possible to debunk Intel Management Engine conspiracy theories using a data usage monitor device?

If there would be any backdoor in recent Intel CPU's, then it should send and receive data secretly. Isn't it possible to easily debunk this conspiracy theory by implementing a third physical device ...
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8answers
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Are all USB-based attacks dependent on being able to inject keystrokes?

From what I've seen, USB-based attacks such as RubberDucky need to be able to open a terminal and then execute commands from there, usually to download and then install malware or to open a reverse ...
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0answers
81 views

Could a Hardware Token Defeat a Keylogger?

I would like to improve my understanding of keyloggers by asking what is feasible with current technology. That is, I mean to be asking a conceptual question that doesn't verge into sci-fi. My ...
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2answers
101 views

Can you trust your computer devices to be safe to use if they have been in the hands of potential hackers? [duplicate]

Suppose you lose the bag containing your laptop along with its accessories or while travelling the police confiscate all your computer devices, can you safely use all the devices again if you format ...
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1answer
121 views

Best practice to secure hard-drive in case of theft or loss or unauthorized access?

Scenario: a person owns and used only a laptop (or PC) and on its hard drive is stored sensitive information, in addition, in browsers the logged-in sessions to gmail, facebook, server, etc...etc.. ...
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1answer
125 views

Is there a safe way to use external display with USB Type-C laptops?

Somewhat related to Is malware or screen capture possible with iMac as external display?, where we investigate the possibility of a DMA attack through DisplayPort, nowadays, many machines don't even ...
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1answer
249 views

Is the security seal on samsung phones proof that the phone has not been tampered with?

Samsung phones come with a security seal that says you should not buy the phone if it is broken. Is this proof that no one has tampered with the phone? Is there some way to take off the seal and ...
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1answer
98 views

Protecting private encrypted data on public computers

Consider an (Java) application that will be deployed on an off-the-shelf laptop in a public location. The laptop is not connected to any network or the internet. A USB barcode scanner is available as ...
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79 views

How to identify which device is malicious

I'm facing a surprising problem : A windows 10 computer seem to use keyboard and mouse by himself on the login screen. So I'm guessing : It's not a software intrusion, because it that way the ...
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0answers
86 views

What kind of attacks can hardware level memory encryption protect from?

Both AMD and Intel have introduced memory encryption at the hardware level. AMD calls this Secure Memory Encryption (SME), with the Intel version being Total Memory Encryption (TME). What kind of ...
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1answer
55 views

threat intelligence gateway [closed]

A TOG (threat intelligence gateway) is a hardware piece that sits between the router and the firewall. The TIG uses the threat intelligence and filters out the malicious urls and IPs before reaching ...
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1answer
58 views

What credentials does this hardware device steal?

I was reading about this device the author made, however he did not specify WHAT he was able to steal from a locked computer. What credentials does this steal? https://room362.com/post/2016/snagging-...
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2answers
231 views

How to protect external hard drive from tampering?

I am looking to buy an external 1TB hard drive to store sensitive information on. External hard drives aren't (physically) small, and it may have to be left unattended at times. What can I do to ...
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1answer
508 views

Is there a unique way to identify a hardware?

I'm considering an environment in which I will have to identify a computer. In this scenario all hardware parts (CPU, HDDs, RAM, etc) won't change, while I'd like to consider a changing OS. The goal ...
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3answers
827 views

Ring -3 exploits and existence of other rings

Concept of Rings Rings were introduced in the forerunner of UNIX, Multics, and had 8 rings for reading, writing, executing and calling (I don't quite understand why it needed 8 rings to do this, if ...
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1answer
139 views

How can I challenge an attacker to reliably identify their hardware? [closed]

I distribute a client application where I would like to identify a user's hardware specifications when they begin interacting with my server. I am specifically interested in identifying the user's GPU ...
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3answers
246 views

Can PCB's contain spyware?

I'm thinking about purchasing a keyboard PCB from someone overseas, but I'm not 100% sure if it's safe. The firmware I'm going to install is QMK which is open source and I feel safe using it. ...
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3answers
452 views

Easiest way to secure my home network from work pc

I am about to start a work at home position using a mac. I will be using my own personal internet to connect to their servers through their VPN. I want to isolate my work PC from accessing my home ...
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1answer
261 views

How to make USB drive read only and write by a password or key or certificate?

I am trying to distribute a software, a simple exe file, that can be executed directly from an USB drive. I would like to make that USB drive read only to avoid any malware infection and accidental ...
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1answer
573 views

Requiring hardware key at boot-up on normal laptop

I am sure that a question like this already exists and has probably been answered. I just couldn't find any results (probably due to my inability to word my question correctly). We use laptops at ...
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1answer
4k views

Estimating Password Cracking Speed Based on GPU?

I was wondering if there was a calculator or formula I could use to find a rough estimation of the time it takes to crack hashes based on GPU. I am trying to assess how much performance I would lose/...
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1answer
117 views

How secure is a Mac if it passes Apple Diagnostics?

Recently I brought my MacBook Air to a Genius Bar to perform a clean MacOS installation. For security purposes, I asked for a hardware check as well. The Genius Bar technician ran Apple Diagnostics, ...
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1answer
182 views

Do video cards store any personal information? Should they be destroyed when getting rid of them?

I realize this question sounds a bit ridiculous but I figured it couldn't really hurt to ask. I am in the process of getting rid of some old computers of mine, and I know that I need to destroy the ...
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4answers
9k views

Should one buy new hardware after a system compromise?

If there are places on a laptop malicious programs can leave elements, hooks, backdoors etc, in locations such as BIOS, device controllers, firmware etc - what confidence can one have in wiping the ...
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2answers
187 views

Does “Restore Factory Defaults” Wipe Out My Data Completely?

I used to have a IBM Thinkpad (Lenovo) T440. I have been using that laptop for over 8 years. This device has been reset to factory default multiple times (probably up to 6-10 times if not more) ...
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1answer
306 views

Is there a “no-spy, no-backdoors standard” for telecom hardware manufacturing?

The BBC News article Huawei says willing to sign 'no-spy' agreements reports the following: Huawei has also said it is independent from the Chinese government, but some countries have blocked it from ...
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2answers
978 views

What are the new MDS attacks, and how can they be mitigated?

Several new hardware side-channels were discovered called MDS attacks, which allow reading arbitrary memory, like Meltdown. Many existing mitigations are useless against them. The relevant CVEs are: ...
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1answer
173 views

Is faulty RAM a security risk?

If the RAM is only slightly faulty, so that the machine boots apparently normally, but sometimes crashes. Can the fault be leveraged somehow?

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