Questions tagged [bitlocker]

A logical volume encryption feature included with specific versions of Microsoft Windows Vista and later.

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1answer
44 views

Installed TPM, how to use BitLocker without USB key?

I have a Windows 10 computer with 3 hard drives: Samsung SSD 850 EVO 1TB (SSD, system drive where Windows 10 is installed, not encrypted yet) First 3 TB HDD already protected by BitLocker Second 3 TB ...
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Does Stopping a Bitlocker Encryption Process Damage Harddrives or Data? [migrated]

I've started Bitlocker Encryption on a pretty large internal drive around 4TB, it's obviously a stupid mistake from my side. It's been running for a long time. What will happen if I cancel it which I'...
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Is it theoretically possible to resize a partition encrypted using Bitlocker (without decrypting the data first)? [migrated]

From what I've been reading, the guideline regarding manually changing the size of a Bitlocker encrypted partition is: (a) decrypt the partition. (b) resize the partition. (c) re-encrypt the partition....
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1answer
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Can I secure the bootloader without a TPM?

I have a lot of PCs without a TPM installed. Buying TPMs for all of them is not an option, but I still want to do encryption on them. From what I've studied so far, the entire system/boot partition ...
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Are there known escapes to get disc access when a Bitlocker-encrypted password is locked at the Windows login screen?

So on a bitlocker-encrypted single drive on a laptop, if the laptop is booted and waiting at the login screen, is there a way to escape from here to get disc access, possibly excluding that of ...
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66 views

How to have full drive encyption that is unlocked while a USB device is plugged in?

I'd like a solution that autounlocks Bitlocker, VeraCrypt or similar FDE on Windows 10 while I have a device plugged in. When it's not plugged in (or I lose/destroy the device) it should just ask for ...
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53 views

How is .NET Core isolated storage “secured” on various OS's?

I'm looking for a consolidated list of how and where isolated storage is managed on each operating system... (Windows, MacOS, Linux, (mobile?), ...) Does such a list exist? What considerations might ...
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1answer
98 views

Cloning external harddrive encrypted by bitlocker using dd

Hi I want to know if I use dd to clone an external hard drive encrypted by bitlocker to another external drive, can the clone always be opened using the same password or there are exceptions?
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Does the TPM check the addition/removal of boot-entries

I have an issue that has been puzzling me tegarding the TPM checks on my machine, and I cannot find much documentation about the checks a TPM exactly performs. The issue is the following; I have a ...
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1answer
111 views

Is bitlocker without a PIN as good as having no hard disk encryption at all?

If bitlocker was configured for a user not to input a PIN; and the device got lost/stolen; is there a risk of the data on the hard disk being exposed? With no PIN enabled; is that essentially as good ...
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1answer
64 views

Decrypting a BitLockered USB drive [duplicate]

I have encrypted a USB drive with BitLocker and I have lost the password and the hash backup. I have tried to search for something to decrypt the drive but came short. I have imaged the USB drive and ...
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1answer
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Do border agents have a master key for BitLocker?

Do border agents have the master key to Bitlocker? A few years ago a Canadian border officer told me my computer with BitLocker could be deciphered by a Canadian security agency. Since this is ...
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1answer
153 views

Why doesn't the PIN become part of the encryption key in bitlocker with TPM?

I have read here that if you choose TPM + PIN protection the PIN does not become part of the key, it is simply used by the TPM as an additional security measure. It doesn't make sense to me, it would ...
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1answer
480 views

How secure is BitLocker without TPM?

My laptop doesn't have TPM. If I enable BL PIN and someone steals my laptop and remove the drive, will they be able to read it's content on another computer? How am I vulnerable without TPM?
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TPM & Windows BitLocker: how does it work and is it secure?

When starting a BitLocker-encrypted machine with a TPM and Windows 10 installed, you aren't prompted to enter a decryption key. The system relies on Windows lockscreen for authentication instead. My ...
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1answer
167 views

Has there ever been a known case of Bitlocker breach through lock screen?

Scenario: A Windows user with Bitlocker-encrypted OS drive uses Win+L shortcut to lock their computer, but leaves it powered on. At this point, their house is raided (by police, or thieves, or FBI, ...
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1answer
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How I can encrypt Windows if I use a SSD and HDD?

I need to encrypt my Windows Disks with full disk encryption. Windows is already installed and all drives have data. My Drives/Disks: 1 SSD - C: drive 1 HDD - D: drive and I have a drive where Linux ...
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0answers
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Is 256-bit BitLocker encryption really 256-bit?

It might sound like a silly question, but clearly I'm not getting something. I've enabled 256-bit encryption in group policy settings and encrypted a drive. manage-bde -status says Encryption Method: ...
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52 views

Bitlocker encryption with many signature hits

I have a hard disk which is displayed in Windows as 'unrecognized file system' / 'unallocated space'. When I view the data on the drive, I see many random characters. So I checked if there is a ...
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4answers
564 views

Way to protect from cold boot attack

After reading some research papers about cold boot attack, I got a big shock and start searching for ways to protect against that kind of vulnerability. I got one solution that is using BitLocker pin ...
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Changing MOK database does not trigger BitLocker recovery

I am running BitLocker with the following PCR validation profile: TPM And PIN: ID: {XXX-XXX-XXX-XXX-XXX} PCR Validation Profile: 0, 1, 2, 3, 4, 5, 6, 7, 11 However, using ...
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1answer
813 views

Bitlocker without PIN

In simple words: Does Bitlocker (without Pin) transforms the normal "Windows User login" into something secure? So if you activate Bitlocker (without a pin before booting) you are forced to use the ...
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2answers
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Is Bitlocker secure enough for portable storage devices?

I have recently lost a USB flash drive that contained some important information. Fortunately, it was protected by Bitlocker. I felt the impulse to ask exactly how secure it is. Most answers on this ...
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1answer
99 views

I got my drive “bitlocker encrypted” by enterprise admins. Will this prevent me to share docs with my collaborators?

I admit I don't fully understand the level of encryption bitlocker does. I use Windows 10 and only have a C: drive which just got encrypted per the company policies. Will this hinder my ability to ...
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93 views

Does BitLocker encrypt everything?

just a quick question - does BitLocker encrypt everything including host protected area, device configuration overlay and bad sectors?
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RAID + IEEE1667 + TPM + UEFI

Windows Server using a IEEE-1667 drive allows hardware based encryption on the fly. What are our options when using two disks with a RAID controller, in order to achieve redundancy and parity (T10-...
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800 views

How can BitLocker be considered safer, if it doesn't asks for a key during boot?

I've been using VeraCrypt / TrueCrypt for years. Now, with a new computer (having Windows 10 Pro) I can consider BitLocker. But, either I am complete ignorant and don't see something awfully obvious ...
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2answers
274 views

Is User Account Login Related to BitLocker Encryption Key

When I enabled BitLocker on my system-drive, I wasn't asked to select an unlock-method. I didn't have to enter any new passwords/keys. I only selected a few options for the encryption, and the process ...
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1answer
371 views

Using Bitlocker and hidden volume feature of VeraCrypt together

I'm currently using Bitlocker encrypted external hard drive. The drive is entire-encrypted and single partition. After dividing the drive into partition A and B, I'm planning to make a hidden volume ...
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0answers
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BitLocker Sleep/Hiberate Settings for DMA protection

The Bitlocker the guidance from Microsoft is to disable sleep states and use hibernate in combination with TPM + PIN for elevated security against cold boot and DMA attacks. Unfortunately this is ...
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1answer
1k views

What is the purpose of the Volume Master Key in BitLocker?

From this FAQ, I understand that BitLocker uses the following keys to encrypt the hard-drive: Full Volume Encryption Key (FVEK) (used to encrypt raw data; encrypted by the volume master key and ...
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3answers
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How sufficient are these steps to prevent deleted SSD files from being recovered?

I'm selling a 4-year-old Dell PC with Windows 10 and two SSDs and I want to be sure that nobody can recover anything from my personal deleted files. So far I've done the following. Completely ...
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Non-obvious Mitigations for This DMA-Attack Demonstrated by F-Secure

Are there any non-obvious mitigations for the big DMA-attack revealed last year and demonstrated in this video by F-Secure? We know that Microsoft has published some material pertaining to DMA-...
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1answer
917 views

BIOS Password vs. BitLocker Pre-boot PIN

I'm attempting to ensure maximum security for my PC. I'm running Windows 10 Pro on a business-class HP notebook. Unless I'm mistaken, I understand that both a BIOS password and the BitLocker pre-boot ...
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1answer
1k views

How does Windows use the TPM for BitLocker encryption without an attacker being able to do the same?

How does Windows use the TPM for BitLocker encryption without an attacker being able to do the same? From this FAQ, I understand that BitLocker uses the following keys to encrypt the hard-drive: ...
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1answer
306 views

Windows BitLocker- Is the drive Password the same as the Key used by AES to encrypt the drive?

I am using BitLocker on my Win10. I encryted my usb drive using my Windows BitLocker with a strong password. I know that Bitlocker uses AES-~256 bit key for encryption. My question what is the key ...
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1answer
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Microsoft Bitlocker Decryption interrupted. Cannot decrypt again

I've locked on of my USB drive with BitLocker. When I was decrypting(removing BitLocker), my PC went off due to power cut in the halfway of decryption. Now, when I'm trying again to decrypt using ...
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1answer
226 views

Bitlocker, does additional authentication at startup with TPM device provide any extra security?

Will enabling additional authentication on startup provide any extra security with Bitlocker? At the moment, my laptop boots straight into a Windows login where I use a pin. If I chose to not use pin, ...
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1answer
766 views

BitLocker Encrypted Hard drive without UEFI/BIOS Password set?

My laptop is encrypted with BitLocker with TPM-Only protection and Secure Boot is enabled. Since I do not have any UEFI password set to prevent changes to the UEFI firmware settings, will an attacker ...
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8answers
10k views

Force user to remove USB token

I'm looking at setting up secure laptops using BitLocker with pre-boot PIN and startup key. I'm wondering if there is a way to force the user, who is remote, to remove the USB with the startup key ...
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3answers
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Is it ill-advised to use the same password for lock screen and full disk encryption (Windows 10 BitLocker)?

I am wondering which attacks can be prevented by using a different password for the lock screen and full disk encryption. The goal is to prevent people from accessing my data. The details of my setup ...
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1answer
1k views

Risk of removing the PIN from Bitlocker

Microsoft's implementation of BitLocker for hard drive encryption/protection and integrity supports multiple ways to boot into the system. I will list 3: TPM chip (those that support it) without Pre-...
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1answer
612 views

Why Bitlocker requires partition on some computers but not all

We have HP desktop computers all identical. I setup Bitlocker encryption on one, no partition was required and the computer was fully encrypted. Second computer gave me a different result, Bitlocker ...
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1answer
186 views

BitLocker To Go password strength

When using BitLocker To Go, given that removable drives are inherently offline and may have to resist such attacks, what are the best practices / recommendations for password strength?
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2answers
521 views

BitLocker Recovery Key and Microsoft Account Password

I have a Windows 10 Pro machine; the administrator (and only) account is a Microsoft account. I am trying to set up BitLocker to ensure maximum security and safety, even from Microsoft. I understand ...
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1answer
213 views

Backing up an encypted drive on an encrypted drive

I have searched, and have been unable to find an adequate answer to my question. My apologies as I'm sure this is a relatively elementary question for the users here. I have encrypted my Windows 10 ...
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1answer
688 views

Where is Bitlocker encryption key stored in USB? [closed]

I have a USB that contains the Bitlocker key. When I open USB I dont see any files inside. How can I move the Bitlocker key to another USB?
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3k views

How to prevent Windows Update from suspending BitLocker encryption?

I was quite shocked today to see that a Windows 10 Pro machine that I recently set up with BitLocker (startup PIN + TPM with full disk encryption) suddenly didn't have BitLocker enabled anymore: And ...
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3answers
3k views

Samsung EVO 970 SSD on laptop without TPM - secure erase, is the drive encrypted?

I have a Dell XPS 9550. This was shipped without a TPM. I have since installed a Samsung 970 EVO SSD which as I understand is a self-encrypting drive (SED) and, what I am not sure about is, it can be ...
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0answers
165 views

How does TPM and BitLocker work together?

When a computer has a TPM module, BitLocker doesn't seem to require a password, which makes me really uncomfortable. Where's the key coming from? What's preventing someone from grabbing the key by ...