Encryption is the process of transforming information using an algorithm to make it unreadable to anyone except those possessing special knowledge.

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8
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2answers
9k views

Is Gtalk communication encrypted?

What is the level of security offered by gtalk against eaves-dropping?
7
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2answers
874 views

Why don't email clients encrypt our mail by default? [closed]

jwz - Netscape 4.0 was not my fault. During that dark period, I worked with Lisa Repka on S/MIME, Netscape's implementation of the then-new standard for cryptographically secure email. At the ...
6
votes
6answers
15k views

Windows 7 startup repair with Truecrypt

I have many computers encrypted with Truecrypt 7.1a (current version) with the whole drive encrypted. Today one of them shows the Windows 7 splash screen for a moment and then goes into startup ...
6
votes
6answers
2k views

How can I prevent data theft from a company? [closed]

How can I prevent data theft from a company? Are there any solutions to this problem? Is there any software that encrypts important data (.doc, .xls, etc.) and prevents it from copying? I need a ...
5
votes
2answers
1k views

How can I prevent Windows 10 from sharing wifi details with my contacts?

In recent release of Windows 10 we could see a new feature named wifi sense, which raised the following security threat as per this blog post : This brilliant new feature, which Microsoft has ...
5
votes
1answer
3k views

Encrypt files on an SD card

I have a new computer with a shiny slot for an SD card. I have brought a nice fast 32GB SD card for it and will be using that as personal back up of my important documents. What I hope to be able to ...
4
votes
2answers
492 views

How to remove BUYUNLOCKCODE Ransomware

A ransomware appears to have been circulating for the past few weeks. the data files will be encrypted and a BUYUNLOCKCODE.txt ransom note will be created in all directories where a file was ...
4
votes
2answers
882 views

Should software encryption affect the “Disk data transfer rate” from Windows Experience?

My company mandates Software Encryption for all laptops. I dragged my feet because I did not want to have anything between me and my data. But I was finally pushed into it. I installed it and I am ...
4
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2answers
1k views

How to encrypt ONLY a user's profile folder (e.g.: /User/sid) on Mac OS X Lion 10.7.2?

I wanted a way to encrypt my user folder e.g. (/User/sid/*) and have Mac OS X auto mount it based off my login credentials. Since that folder also contains profile info, I suspect it would need to be ...
4
votes
1answer
2k views

What is the best way to protect e-book?

I am a writer and want to sell my ebooks on the web. But recently there are many bad buyers who remove the protection, modify the contents, and share them on the web. My related question: Is it true ...
4
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3answers
4k views

Decrypt files encrypted with TrueCrypt

I have a usb pen memory crypted with TrueCrypt. Is there a way to decrypt ( without TrueCrypt ) files encrypted with TrueCrypt in linux ?
3
votes
5answers
2k views

File-based encrypt-and-sync solution for Windows

There exists many syncing and backup solutions out there, but I have yet to find a setup that will cover ALL the following behavior: I want the ability to designate local folder B as the "encrypted ...
3
votes
3answers
212 views

anonymous browsing

I just watched a video by Eben Moglen about the increasing surveillance of our connected network devices and a lot of what he said rang true. The video can be found here if you're interested. I'm not ...
2
votes
2answers
354 views

LUKS encryption with non-interactive login on RHEL6

I need to have LUKS encryption on this system but during lab development I don't want to have to enter the password at the console each reboot. I'd like a way to set a simple password that can be ...
2
votes
2answers
849 views

Using Pidgin with OTR-encryption on Linux and Windows [closed]

Please show here how to install and activate OTR ("Off-The-Record") and Pidgin to me on both: Windows and Linux.
2
votes
5answers
13k views

Is it possible to FORMAT an external hard disk that has been encrypted using Storagecrypt?

I lost approximately 680 GB of data on my Seagate 2TB hard drive while experimenting with a software called StorageCrypt. I used it a few months ago and today I tried it again. But, I didn't know ...
2
votes
1answer
750 views

Encrypting C:\Users on Windows 7

Is there a way to encrypt C:\Users on Windows 7? I've tried TrueCrypt with whole partition encryption and it doesn't work because I don't have 32kb free in my boot sector (Apple's Boot Camp I ...
1
vote
3answers
2k views

Decrypt RC4 in Linux

I'm looking to decrypt RC4 encrypted data. I've tried openssl but it doesn't support my key length of 64 bits (my version only has rc4 and rc4-40). Encrypted data: ...
1
vote
1answer
229 views

Is filesystem encryption any good if someone steals my computer while it's on?

I'm using Ubuntu 12, and during installation I have chosen to encrypt the disk and home directory. I only introduce the disk password the first time I log in, so I guess the disk is not encrypted ...
1
vote
2answers
882 views

Wake-on-LAN with encrypted drive

I've set up a Ubuntu system as a server, with the entire drive encrypted. It needs the password at bootup, after the BIOS hands over to GRUB (at least I think that's when). I've since set up ...
1
vote
1answer
2k views

TrueCrypt usage: is it possible to have 1 password unlock 2 volumes?

I have been asked by a relative to encrypt both a USB pen & a Hard-disk folder. My immediate thaught was to use Truecrypt being that its free and relativly decent! My question is this: is there a ...
0
votes
1answer
485 views

Activate local logging of OTR chat sessions in Pidgin

I am Using Pidgin with OTR-encryption on Linux and Windows but those encrypted chats are not logged in my chat history. Is it possible to activate the chatlog for chats, that are done with ...
9
votes
2answers
3k views

I've lost access to my encrypted files

I have an account on Windows Server 2008 R2, which at the moment I am using as a desktop. I had certain files encrypted under a standard user account. I changed my password, and then lost power ...
9
votes
4answers
435 views

If a “forgot your password?” page emails your old password, is that definitive proof that they have stored it in plain text?

When a site emails your old password, as opposed to requiring you to reset it on the site, I'm wondering what that implies about their security measures. Does this mean that they store the password ...
6
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2answers
1k views

if one doesn't care about protecting a gpg secret key, is it still as secure as using gpg --symmetric?

Each of Alice and Bob is using gpg just to protect his/her own personal files and not using it as a way to send encrypted text to others. Alice has generated a key (gpg --gen-key) that she uses to ...
6
votes
4answers
669 views

How to determine the entropy of a password

How can I tell if a password has good enough entropy to prevent brute-forcing on a realistic timescale? For example, if I have the following password, how can I determine if it is strong enough to ...
5
votes
3answers
1k views

Is it possible for my company to monitor my Gmail?

Since Gmail uses https, all the messages should be encrypted? Here we assume my company does not have keystroke logger or random snapshot software.
4
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1answer
10k views

Windows Bitlocker and automatic unlock password storage safety

I've encrypted my external HDD with a Bitlocker and after rebooting computer I tried to open that drive and got this message: Say, if I pick to "Automatically unlock on this computer from now on", ...
4
votes
3answers
8k views

How to decrypt Windows 7 encrypted files

I have a flash drive and on this flash drive I have a folder. In Windows explorer, I right clicked on the folder and went to properties. I then clicked the advanced button and there is a check box ...
3
votes
1answer
436 views

How does SSL work? Isn't there a hole?

I was reading this article, specifically the "SSL in action" part. It says: When Client connects to company.com on its SSL-secured port, the company sends back its public key (and some other ...
2
votes
1answer
806 views

Decrypt file on SD card of Samsung phone encrypted by Android 5.0

My Galaxy Note 4 does't recognize the encryption on my SD card anymore. I can't open any file. Now, since I have the password, I thought I could decrypt them myself, with Android Java or with C++ on ...
2
votes
1answer
172 views

Samsung SSD: Hardware encryption and speed

I concern about speed changes of the Samsung MZ-M5E1T0BW 850-EVO when hardware encryption/decryption is enabled. I can't find any information in the data sheets. Do you guys know if there is a ...
2
votes
4answers
157 views

GPG public key created with GnuPG is rejected by MS Outlook 2010, why?

I created a GPG keypair with GnuPG on the CentOS 7 command line and I have exported the public key into a .asc file and successfully used that public key to encrypt emails sent from another email ...
2
votes
3answers
93 views

Is there a reason why people don't secure public hotspots? [closed]

It seems like a network is considered to be secure by OS(or at least Windows) when the network has a password. By secure, it seems to mean the data gets encrypted. Can't public places just put WPA2 ...
2
votes
1answer
696 views

How do I encrypt a folder in Windows RT?

I'm apparently unable to encrypt folders on my Surface RT. When I view the properties of a folder, and then go to the "Advanced Attributes", the option to "Encrypt contents to secure data" is ...
2
votes
1answer
2k views

Is LUKS/cryptsetup's `hddname` (or `name`) simply an arbitrary label used during the session

This is a very simple question about LUKS encryption. My Fedora 15 system uses LUKS over the root, home and swap LVM partitions. To access these partitions from a boot cd, for example, its necessary ...
2
votes
1answer
2k views

If someone steals my chromebook while it's off, will him be able to see my cached data?

Does Chrome OS encrypts everything under my account? Does it save unencrypted data to the disk?
2
votes
1answer
4k views

Can TrueCrypt be configured to dismount volumes when you hibernate?

TrueCrypt can be configured to dismount volumes upon logoff but is it possible to dismount volumes when you hibernate windows?
2
votes
1answer
380 views

How do I decrypt a file with mcrypt?

I have the following: mcrypt installed a file with a .zip.nc extension a password How do I use mcrypt to decrypt the file? The man page isn't very helpful. I've tried mcrypt -k password ...
2
votes
3answers
3k views

Does compression on a TrueCrypt drive compromise the security?

I choose “Compress drive to save disc space” under drive properties.
1
vote
1answer
136 views

How to enable SSD encryption?

I just bought a samsung evo 840, which supports encryption AES-256. Reading the very little documentation that I could find about SSD encryption, I found that I have to enter my bios, go to the ...
1
vote
1answer
998 views

How do I fix a cipher mismatch issue with sftp?

I'm running into an issue where a server was upgraded to RHEL 6.5, and we have automated bash scripts on an RHEL 5.9 install that connects through sftp and ssh commands. Now, the new server only ...
1
vote
1answer
1k views

Cannot extend non-system bitlocker partition

The "Extend Volume" command is greyed out when trying to extend a Logical NTFS drive, despite there being unallocated free space to the right with nothing in the way. Is this because of Bitlocker? I ...
1
vote
1answer
3k views

BitLocker vs. Encrypting File System (EFS) on Windows 7

So BitLocker encrypts the entire hard drive, while EFS encrypts individual files. Is there any difference in the way that they implement the encryption? Do they both use your user account password as ...
1
vote
1answer
1k views

How to encrypt a zpool in Linux

Does zfs on linux have a built in command to encrypt entire pools (or zfs file systems)? If not - how should one proceed to do so? (I'm running zfs on an Ubuntu Server 12.04LTE)
1
vote
2answers
697 views

How can you let mutt encrypt mails in the sent-mail folder?

When i sent an encrypted mail, i was surprised that the copy in sent-mail was not encrypted. Checking with a testmail, the mail is sent encrypted, but the copy in the sent-mail folder is plain text, ...
1
vote
1answer
465 views

Is it possible to decrypt multiple truecrypt drives at FDE boot?

I have a Windows 7 Machine with the OS disk using TrueCrypt full disk encryption. I've got an additional 4 other drives plugged into the same machine for storage (Via SATA storage) that I would like ...
1
vote
2answers
3k views

Show the encryption method used on a zip file in WinZip 9.0

I received a zip with an encrypted file inside. How do I determine which encryption method was used on it in WinZip 9.0? I've cruised all the menus and options and see no easy way to tell this ...
1
vote
1answer
469 views

Fedora15 - Help me understand how cryptsetup and LVM interact

Upgrading F11 to F15 I've decided to encrypt the disk. Anaconda appears to have limited support for custom disk partitions (mine is dual boot). The result of my second install attempt was a PV boot ...
1
vote
1answer
435 views

Security Considerations when Storing Documents with TrueCrypt in Dropbox

I am considering moving my default documents folder to Dropbox. These also contain scanned letters and important information relating to contracts, bills, and so on. I will encrypt those with True ...