Disk encryption is a special case of data at rest protection when the storage media is a sector-addressable device (e.g., a hard disk).

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Can Windows BitLocker encryption be broken by Live Boot?

I have a Windows system and I protected the drive with BitLocker encryption. Can BitLocker encryption be bypassed by live-booting with Linux or any other OS?
3
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1answer
54 views

How does the MFT encryption work?

A few week ago there was a ransomware called Petya delivered via Dropbox links. The new ransomware is inserted into the master boot record (MBR) of the victim's computer, and the system restarts. On ...
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encrypted drive

Provided you're trying to mount/read a drive with the corresponding OS/filesystem are you always just prompted with a password to de-crypt the drive? Or do you have to figure out if third party ...
1
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1answer
46 views

Break encryption by applying accidental-overwrite techniques

I read that there are ways, at least on mechanical drives, to sometimes recover data that was overwritten (not just deleted). Now I was wondering if it was theoretically possible to break a fresh ...
7
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1answer
81 views

Methods of cold boot attacks in the wild

As far as I know, there are two methods for performing cold boot attacks: Reboot the system into an alternate operating system or BIOS with a minimal memory footprint which automatically exports ...
6
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3answers
124 views

Android full disk encryption

I am using Android 4.4.4. There is an option called phone storage encryption. From what I have read the crypto is secure. However, I read this article which said Google is able to reset passwords: ...
7
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1answer
254 views

Does LUKS actually fully encrypt data on a disk?

Why does TrueCrypt and similair applications take hours to fully encrypt a 1 tb drive, while luks takes a few seconds? Sorry if this is a dumb question, but I don't fully understand how that works.
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2answers
69 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 ...
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3answers
101 views

Is there a way to secure a Linux machine in a way that no one else (but me) can access its contents? [closed]

And I mean, even if someone tries rooting with a Live CD, even if one takes the HDD away and plug it in somewhere else, etc... I want to be able to give a client a machine with a service running, but ...
3
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2answers
48 views

Is VeraCrypt encryption of VHDX correct?

I have created a dynamically expanding vhdx of 500GB to store my backups to - I have decided not to create a 500GB container due to time it would take to create one. I have encrypted the drive ...
1
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1answer
36 views

What threats are mitigated in drives encrypted by USB-SATA bridge?

Some external HDDs (notably, WD Essentials) are known to be encrypted by the USB-SATA bridge present in their case: Essentials drives are hardware encrypted. The USB-SATA bridge board is required ...
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0answers
50 views

What is the fast way to delete a VeraCrypt volume?

A software (such as BleachBit) can wipe data in a file. But it takes time. For a VeraCrypt volume, can we just wipe the volume header (including the backup header)? If so, how to do that? ...
0
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2answers
71 views

How does zeroing out/wiping your disk before encrypting it increase op-sec?

I'v been doing some research and it seems it is recommended to zero out / wipe / overwrite the disk before full disk encryption. Why would that be necessary even when encrypting the entire disk?
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2answers
172 views

Why should one bother encrypting the harddisk in linux if one can easily recover the root password?

If you have physical access to a machine, it's pretty straightforward to recover the root password thereby skipping the whole point of having an encrypted drive. Am I missing something here? EDIT: ...
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2answers
86 views

Creating a secure offsite backup at a friend's house

A friend has kindly allowed me to store a hard drive at his house to use as an offsite backup. I normally use rsync-backup to make backups of my home directory and have always done this (just being ...
3
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1answer
107 views

What's the point of encrypting /boot or / partition?

I'm not talking about full disk hardware encryption. I'm talking about software encryption. encrypting /home prevents your data after your laptop is stolen. As far as I understand, encrypting / and ...
3
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1answer
84 views

Is the Windows paging file safe in the encrypted partition?

I came across this setting called ClearPageFileAtShutdown. The setting is described here and says: If you are truly worried about security, boot Windows off a fully-encrypted drive. Then you ...
0
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1answer
152 views

How to secure (encrypt, password protect) external hard drive used with Windows 7 and 10? [closed]

How can I secure (encrypt, password protect) a portable external hard drive (500GB, NTFS) I use on a couple of different computers (not simultaneously): one computer is my work Windows 7 laptop, the ...
0
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0answers
36 views

Accessible data when hard-drive is encrypted

I recently acquired a new computer so I decided to try a few things, such as disk-encryption (fir the record, I installed Ubuntu 15.10, made only one partition, wiping everything that was here). I ...
2
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1answer
40 views

How well does FDE protect against disk firmware malware?

In early 2015 news broke that the NSA was installing firmware backdoors in many hard drives. I was wondering, if there was a BIOS and Hard Drive backdoor how well would full disk encryption protect ...
6
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1answer
110 views

Method for securely removing files from a solid state drive

I've thought of a method for securely erasing single files on a solid state drive. This method will work only if the drive is encrypted, and it will work even if someone cracks the encryption key for ...
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1answer
73 views

How do I change LUKS backend to OpenSSL?

I know there is a way to do it, but I don't know how to do it: the default backend for LUKS is libgcrypt and I want to test it with the openssl cryptographic library. I was told that there is a ...
2
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2answers
100 views

How can I extract the encrypted master key from LUKS header?

I know that a LUKS partition has a plain-text header that stores many informations like master key (MK) digest, MK iterations of PBKDF2, information about the 8 key-slots etc. I also know that in the ...
5
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3answers
131 views

Full Disk Encryption and Network security

I very recently had a job interview in which the interviewer asked me how full disk encryption helped improve network security? Initially I believe they are seperate and not linked, FDE is local to ...
0
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1answer
129 views

Encrypting the System Infrastructure

The requirements are to Encrypt the data in our servers 'at rest' and the 'database' - in short the whole infrastructure. Threat Model - to protect a possible data-breach by an adversary (or from ...
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2answers
51 views

Is there a full-disk-encryption OR file-encryption solution where a trojan can NOT extract the secret key (e.g. from RAM)?

Is there a full-disk-encryption OR single-file-encryption solution like an operating system or a combination of devices or services ... that make sure that the master-decryption-key can NOT be ...
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2answers
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Which is more secure a full disk or file encryption? [duplicate]

There are probably two ways to encrypt your computer full disk encryption which completely locks down the computer between when it is off and when it has booted but after everything loads you computer ...
8
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3answers
382 views

what does LUKS header contain?

What is contained inside the LUKS header ? I know, the header has size of 2MB. Also, cryptsetup supports "detached header", where the header can be stored in a separate file. Thus, for example, I can ...
3
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3answers
147 views

File encryption on a solid state drive

It seems a lot of computers are switching to solid state drives, and one of the downsides of this is that it seems to make encryption of individual files basically useless, because when you encrypt a ...
3
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1answer
96 views

Laptops SSD: Hardware Encryption plus DM-Crypt/Luks - Security and Performance

I just bought a new Thinkpad t450s, and put a Samsung 850 pro in it. My Cpu supports AES-NI and the SSD supports hard-ware based encryption. My question is, is there any reason to do Both ...
4
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3answers
901 views

Samsung SSD 850 EVO. Best way to protect personal data against thiefs

I'm wondering what is the best way to protect my personal data stored on Samsung SSD 850 EVO in Linux? I did some research and found this. To set an ATA password, simply access the BIOS, navigate ...
2
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1answer
121 views

Can I use more than one encryption program to encrypt my computer files or will it cause conflicts?

I encrypted my Ubuntu Linux Operating System in the installation process using the default encryption in Ubuntu if my computer is encrypted with one program can it be encryption with another at the ...
0
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5answers
161 views

How to make sure nobody has read this!

Is there any computer/server which would allow me to get "guaranteed read access history" for files? For example, suppose I made a file with my plaintext passwords and simply wanted to make sure that ...
0
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1answer
127 views

Online vs offline backups [closed]

Up to this point I was using physical hard drives for backups, typically using dm_crypt as mentioned here. If online storage is used instead, and the provider cannot be trusted how much should the ...
3
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1answer
122 views

Securely read encryption key from NVRAM of TPM 1.2

I have configured a disk encryption in linux using LUKS with TPM with secure boot. The encryption key is loaded from TPM from NV memory using command TPM_NV_ReadValueAuth. The problem is that it is ...
1
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0answers
36 views

Is there a point in cascade encryption? [duplicate]

I was reading the other day about some programs (ex: DiskCryptor), and with my limited knowledge of cryptography.. I started wondering about cascading encryptions (ex: AES-Twofish-Blowfish). Assuming ...
6
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1answer
111 views

Benefits of cloud based full disk encryption

Microsoft announced in May that it supported full disk encryption for VMs. They have recently merged a github branch into the Azure Powershell tools to enable this. The basic theory is that you ...
3
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1answer
190 views

How safe is the encryption offered by Mac OS X's Finder?

If you plug in a USB drive, open it in Finder and right-click the Finder window, you get the option to encrypt the drive. What methods does Finder use to encrypt the drive and how safe is it ...
3
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1answer
65 views

FileVault and Sleeping mode

I have FileVault activated on 10.10. (Mid 2012 MacBook Pro - MPB) I relaized already that there are different sleep modes. autopoweroff and normal Standby. Whenever the MBP goes into Hypernate mode, I ...
3
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2answers
157 views

Most secure way to deliver web app for offline access [closed]

Having built a web app based on a PHP stack which is deployed on a server, I would like to have a way to provide access to it offline. There's a database of patients and appointments that needs to be ...
0
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1answer
183 views

Is it possible to recover a Diskcryptor volume password?

Must admit to being dumb: I have encrypted one partition from my external hard drive with the AES-Twofish-Serpent algorithm and used a key file with a password. My PC ran into a problem and now the ...
22
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4answers
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Is a file shredder/secure erase necessary when you have full disk encryption turned on?

The password manager that I use has instructions to migrate to a new file format: Export existing passwords to a temporary text file Change password manager to new format Import passwords from ...
2
votes
1answer
102 views

How safe is Apple's FileVault full disk encryption?

I have read about this encryption feature for OS X but want to know how secure it is compared to PGP.
1
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1answer
46 views

What does “8.11 Encrypt or sign files into an archive” do?

I am going through the GnuPG manual and I want to encrypt a folder which, if my laptop was taken by anyone else, noone would be able to get access to for any of my information. This man page gives me ...
1
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0answers
112 views

Whole disk encryption on a tablet (that has no pre-boot keyboard) [closed]

I am researching methods to encrypt whole disk on tablet. I would like to encrypt my tablet that comes with Dual Boot OS, with pre-installed Windows 10 Home and Android 5.1. Let's start with what ...
0
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0answers
16 views

Disk Encryption - Extended Boot Record protection

I posted something like this on SuperUser some months ago, but thought I'd try the security focused site. Anyway, I am working on a Disk Encryption project using OPAL drives. The OS is Linux, and is ...
13
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3answers
2k views

Breaching security of a notebook with full disc encryption when screen is locked

I am using full disc encryption on my portable computer (running Ubuntu). The setup requires me to enter a password during the boot sequence to access fully encrypted hard drive. There is no ...
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2answers
540 views

What is the most “out-of-the-box” secure OS for a home user? [closed]

This question will encompass several topics and may also include user opinion. Here is the question, and how I want you to qualify it: Question: What is the most "out-of-the-box" secure OS for a ...
4
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1answer
139 views

LUKS TPM disk encryption attacks

Is it possible, or are there any known attacks, to get the encryption key for disk encryption tpm-luks? (Linux LUKS using encryption key stored in TPM) I know that there are attacks like cold boot ...
9
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3answers
271 views

My Samsung SSD password is case insensitive, how does this affect Full Disk Encryption?

I have a Samsung Evo 850 SSD, the 500GB model and it's supposed to benefit from Full Disk Encryption (FDE). Once you set a HDD password in the BIOS the FDE is supposed to kick in. However, I was ...