A message from our CEO about the future of Stack Overflow and Stack Exchange. Read now.

Questions tagged [bios]

Basic Input/Output System (BIOS) is a software that is stored on a non-volatile ROM chip on the motherboard and BIOS is the first code run by a PC when powered on.

Filter by
Sorted by
Tagged with
0
votes
0answers
4 views

BIOS/UEFI update and BitLocker suspension [migrated]

I can read on many pages that when you update your BIOS/UEFI, you need to suspend BitLocker (for information, mine is configured to ask for a password at startup, no TPM in my machine). But none of ...
0
votes
1answer
85 views

Used laptop with potential BIOS/SSD firmware malware

I bought a used laptop and I'm concerned about the integrity of the firmware on the hardware and bios. I realize these types of malware are very rare. 1) My question is that if I assume that the BIOS ...
0
votes
1answer
107 views

Can I use silicone to protect the BIOS

I plan to create an air-gapped laptop with a separate bootloader that is on a permanently write-protected SD card that I will carry in my pocket all the time. I will also remove the wireless card on ...
1
vote
2answers
79 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 ...
1
vote
1answer
48 views

Can website exploit kits contain bootkits?

Can a website exploit kit theoretically contain a bootkit (it flashes your UEFI/BIOS)?
0
votes
1answer
67 views

Should i update the BIOS

I was reading about BIOS vulnerabilities and rootkits that have flashed malicious code to the BIOS in order to maintain access after a factory reset/operating system install or a hard drive ...
2
votes
1answer
172 views

BIOS password hash

Is it possible to find the BIOS password hash in a BIOS dump and decrypt it? For instance, a person could use flashrom Live CD to dump the BIOS with flashrom -r but how would you find the BIOS ...
1
vote
1answer
167 views

BeagleBoneBlack, TPM and uBoot

I'm using BBB in my project. I need to prevent any changes to the software running on it. I've been reading about uBoot and TPM. But if I understand everything correctly, this can't be implemented ...
0
votes
1answer
373 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 ...
0
votes
0answers
45 views

Multi-Boot & BIOS Attack Vector Risks For Bitcoin Wallet Storage

I'm trying to emulate a cold storage computer for crypto assets with a multi-boot computer. If I have multi-OS boots & the 'cold storage' boot is never connected to the internet when it is booted,...
0
votes
0answers
55 views

Phoenix/Samsung BIOS/HDD security

I have a laptop bought in 2011. I want to protect its BIOS and HDD (data is already encrypted anyway). But I have seen these vulnerabilities: After 3 incorrect tries, I see "System Disabled" with ...
94
votes
9answers
23k views

Can a virus destroy the BIOS of a modern computer?

In the late 1990s, a computer virus known as CIH began infecting some computers. Its payload, when triggered, overwrote system information and destroyed the computer's BIOS, essentially bricking ...
1
vote
4answers
164 views

Volatile memory only computer?

I was wondering, is it possible to create a fully volatile computer, with no permanent memory at all (not even in the BIOS), that will be loaded on each boot from a read only live CD? Such that in ...
0
votes
0answers
56 views

is it to possible to programmatically destroy a PC? [duplicate]

is it possible to totally destroy the PC with use of code only, if possible how? i mean like: frying the RAM frying the GPU overclocking the CPU till its dead In a TV series called MR ROBOT there ...
0
votes
1answer
211 views

badBIOS reflashing

This is not a has-badBIOS-pwn3d-me post, so don't worry about any paranoid rants. Having read a thorough analysis/debunking of the alleged evilware, I certainly understand that the technology badBIOS ...
0
votes
1answer
231 views

What bios passwords & settings are important to set on a Thinkpad X1 laptop?

I am just booting my new X1 for the first time, and went into the bios to set a bios password. I discovered a slew of security settings: Supervisor password Lock UEFI BIOS Settings (enabled/disabled) ...
1
vote
0answers
72 views

using sha256 to check for boot tampering

Consider the following machine: Dual Boots to two OSes, OS "A" and OS "B" OS "A" is trusted The bios is trusted. The root partition of OS "A" is encrypted OS "A" doesn't support secure boot OS "B" is ...
1
vote
2answers
327 views

How could malware survive hard disk drive format without residing in the firmware?

For example could it "trick" most partitioning/disk utility tools that it was successfully wiped, but with the malware still existing? Kinda similar to what would happen if you attempted to "clean" ...
0
votes
1answer
1k views

Potential UEFI malware from Virus Total .rom scan

I dumped my firmware on my Macbook with Darwin Dumper and uploaded the .rom file to Virus Total and it showed a huge amount of bad PE32 images (File detail tab), all of which seem to be detected by ...
3
votes
3answers
215 views

Is knowing the BIOS password of help in hacking a computer *remotely*?

Let's assume that a hacker knows the BIOS password of a computer, but can only connect to the computer over a network (Internet). The attacker has no physical access to the computer. Is knowing the ...
0
votes
0answers
47 views

If you buy a used hard drive or CPU, how to guarantee it doesn't have anything installed or running on it [duplicate]

Say you buy a used hard drive, or a computer (wondering about both cases, something that is just a drive for storage, and something that is an actual running chip). I am not interested in whether or ...
-1
votes
1answer
308 views

Explain how a BIOS/UEFI infection may compromise the security of the Operating System [closed]

Explain how a BIOS/UEFI infection may compromise the security of the Operating System.
2
votes
1answer
103 views

Dumping BIOS and USB bootloader

Edward Snowden suggests to have the bootloader on a USB stick to prevent evil maid attacks and to dump the BIOS, hash it and compare it everytime. Is using Tails from a USB stick means the bootloader ...
2
votes
0answers
112 views

Can maliciously modified ACPI AML be executed without a reboot?

ACPI tables contain ACPI Machine Language, or AML, which is executed by an interpreter in the kernel at boot. Certain ACPI tables, such as the DSDT, are necessary to support hardware ACPI events such ...
3
votes
1answer
155 views

Is it risky to install a theft-protection system?

I recently bought a Dell laptop and found out that Dell recommends to install a theft-protection system called LoJack. It is a system installed on the BIOS; if the laptop is stolen, it is possible to ...
3
votes
3answers
365 views

Can BIOS/UEFI change OS code?

I know that the OS is the boss of programs (once OS is loaded). Is BIOS/UEFI the boss of the everything before OS is loaded? Can an OS be a sitting duck for any BIOS/UEFI related malware? In other ...
2
votes
1answer
341 views

Feasibility of infecting notebook BIOS with virus?

I bought my computer in 2011. From 2011 to 2015 the computer was accessible to a cousin of mine who is a developer. He doesn't work with IT security, but has more than a decade of experience ...
1
vote
1answer
151 views

Verifying that the CRTM is read-only for the purpose of trusted computing

When using a TPM to provide integrity measurements for a system via SRTM, the trusted computing base is reduced to only the TPM and CRTM. The CRTM is a component of the BIOS (specifically the ...
16
votes
2answers
7k views

Can BIOS malware be installed from OS?

Can an OS vulnerability be exploited to install BIOS/UEFI/firmware malware (such as a keylogger)? I know BIOS is a "deeper" level than the OS. I know firmware based keyloggers exist. I know they can ...
1
vote
2answers
467 views

Never believed BadBios…but do now…is there help? [closed]

After lengthy efforts to remove multiple malware issues off of 6 laptops, the strange behaviour is an accurate depiction of "badBios", something I never believed true. My current experiences have ...
4
votes
4answers
1k views

Redirect malware in BIOS or MBR can't remove it

I bought a brand new Dell Inspiron 15 7567 laptop factory sealed and new. I booted it up went through the install process and finally logged in. Opened the edge browser and went to Youtube to play ...
1
vote
2answers
161 views

Can a running kernel be protected by underlying rings, BIOS etc?

I mostly found examples the other way around: compromising the OS e.g. through a compromised BIOS or Intel ME. But are there known examples where stuff runs underneath the kernel and can be used to ...
5
votes
1answer
242 views

How would I secure my bios?

How would I fully secure my bios password/other settings from being reset/breached by pulling the battery out or by other means?
47
votes
5answers
11k views

Does adding a password to BIOS prevent malware from infecting it?

I'm looking into ways of hardening a computer's security. One of the things is the BIOS. Does adding a password to the BIOS prevent malware from infecting it? I have seen this article: Protecting ...
1
vote
3answers
6k views

How secure is Secure Erase option in BIOS?

I have been exploring data security lately and came across HDD data recovery. I now know that a format simply deletes the "pointers" to files and directories and that data is still there. The only way ...
1
vote
1answer
322 views

How to reset the BIOS without access to the motherboard? [closed]

I'm working on a pentest project (with permission of course). I'm trying to get the local hash on a computer so that I can crack it and use it as a skeleton key for other computers (all computers have ...
4
votes
1answer
1k views

How BIOS password stored internally?

Is password hashed before saving to CMOS? Which hash algorithm is used? How much storage is dedicated for passwords? What is about passwords of SSD with AES? Does BIOS save it inside drive (just ...
2
votes
1answer
131 views

What is the most secured UEFI publicly available?

It is very scary to know that spywares were installed on some largely commerciallized laptops at the BIOS level. Example: Lenovo ThinkPad spyware What UEFI would you recommand to have in order to ...
1
vote
1answer
315 views

How not to be hacked through Computrace?

Computrace can be used by hackers. I would like if someone can explain in plain language (for mere mortal) how in what circumstances Computrace can be used by hackers (Am I vulnerable always or if I ...
4
votes
2answers
3k views

Can Restarting An Infected Computer Make It Worse?

I seem to remember that rebooting a potentially infected Windows PC before removing the malware may allow it to take advantage of early boot up states that may be vulnerable if the security measures ...
2
votes
0answers
139 views

BIOS flash possible? [closed]

Not sure if it's the right forum to post this but have been modifying the BIOS of my Asus N551VW (which is a skylake laptop (I7-6700HQ) with an AMI Aptio BIOS) and I'm ready to flash it. Problem is, ...
1
vote
1answer
674 views

Are UEFI vulnerable to the same password bypass techniques as BIOS?

I'm trying to understand if the old school ways of bypassing a BIOS password (flip the BIOS jumper or remove the CMOS battery) still affect (some or all) modern UEFI? If not, what protections do ...
2
votes
1answer
94 views

Could a computer turn itself on if the BIOS was modified even if it was turned off by holding the power button down?

My Thinkpad might have been hacked and I know this sounds a little far-fetched, but I suspect the BIOS might have also been hacked. Would turning it off by holding the power button for a few seconds ...
-4
votes
1answer
248 views

My mouse sometimes move without reason. Could it be a virus persisting Ubuntu reinstalls? [closed]

I am running Ubuntu Linux and I have reinstalled the system several times but sometimes I still feel like somebody gets remote access to my computer. I'm not running any software like Team Viewer. I ...
3
votes
3answers
4k views

Will setting a BIOS Password Protect the TPM?

I have Windows 10 on a Dell Precision Laptop, Bitlocker Drive Encryption set up for my system drive with TPM only and I do not want 20-number long PIN, but I want a password (like I had in TrueCrypt, ...
5
votes
1answer
192 views

Can you prove that the OS loaded by your BIOS is really your OS?

Assume you are a paranoic that have a 100% open source OS with drivers etc, but you don't have an alternative to your closed source BIOS. How can you sure the BIOS didn't insert malicious code in e.g ...
0
votes
2answers
948 views

Best way to make a Linux install tamper proof

Good day, I am currently planning an environment where it comes down to the biggest security risk being to boot to another environment and tamper with the install on the disk (Older PCs with physical ...
3
votes
3answers
876 views

Unlock a computer bios?

If you or someone is to add a password to the bios of a computer and make ot so when booting the computer it prompts for the password is there a way to bypass or overide this activity?
5
votes
2answers
12k views

How secure is a BIOS/UEFI hard drive password? [duplicate]

I'm buying some new machines and am concerned about security of the data should the machine be physically stolen. It's easy to take out the drive, image it, and read what you want. I could use file ...
29
votes
11answers
5k views

What is the point of using an open source and secure OS if you are running it on a machine with closed source firmware?

I'm very interested in the OpenBSD OS, as it currently seems to me to be the option that takes security more seriously than its contemporaries. But as I was reading about it, it occurred to me that ...