the process of converting information using an algorithm (or cipher) to render the information unreadable to anyone who doesn't have the algorithm (also known as a key)

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15 views

Apple Mail doesn't show when a mail is encrypted (using S/MIME)

I have recently started using S/MIME since we got a certificate from our school and are advised to use it when possible. I am using El Capitan 10.11.4. The encryption and decryption process ITSELF ...
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1answer
22 views

unlock external locked encrypted disk with applescript command by filling dialog box to cracking password by force brut

I make a terrible mistake. I totally lost my paper with the secret password for my encrypted external GUID hard drive. This external drive contains many pictures but also some works documents very ...
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19 views

How to list failed login attempts on Mac OS X 10.11 El Capitan (FileVault enabled)?

Just now, something strange when I open my Macbook Pro Retina : the password entry was locked for 30 seconds and a tooltip saying me to use the machine's encryption passphrase to unlock it. I wonder ...
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1answer
33 views

iTunes local backup of iOS device: can't disable encryption

I have a strange problem with iTunes local backup of an iOS device (an iPod, in this case). I know I've backed up the iPod to my computer before, but iTunes states, "Latest Backup: Your iPod has ...
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2answers
28 views

Always ask for password when mounting encrypted partition

I have an external disk with partitions A and B. B is an encrypted HFS volume with as password. (Presented as "Apple_CoreStorage" or "Logical Volume OS X Extended"). When I connect the drive, OS X ...
2
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1answer
81 views

Does FileVault protect against ransomware?

I've already asked a question about ransomware on OS X in general. But I failed to get a response regarding whether FileVault protects against it. That is what this question is about. I'm also ...
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0answers
5 views

Preview of pictures in Cloudfogger wanted

I used to work with Cloudfogger on Windows. I like it there. On Mac I do not like the implementation that much. For example the preview of photos does not work from within Finder. Does anyone have a ...
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2answers
53 views

Do files copied to an encrypted disk image (dmg) encrypt themselves?

Disclaimer: I'm not sure whether or not this belongs in Ask Different or security.stackexchange.com, but I'm using a .dmg and Disk Utility, so I'll put it here. End of disclaimer. The title says most ...
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1answer
28 views

Error when encrypting .dmg disk image

I have a .dmg file of approximately 32 GB and I want to encrypt it. When I try to, using Disk Utility > Images > Convert, I get an error "status 28". Any idea what this means?
3
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1answer
29 views

How do I encrypt emails using Apple Mail?

Gnu PGP was integrated into Mail using this project, but it appears to be dead (only supports old versions of OSX) http://www.sente.ch/software/GPGMail/English.lproj/GPGMail.html Is there any other ...
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3answers
533 views

TrueCrypt alternative for Mac OS X

I'd need to create an encrypted volume on my MacBook Pro running OS X El Capitan. It's been a while since I needed to do something like that, I think it was 2010 when I used TrueCrypt. I know that ...
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0answers
28 views

howto encrypt “WD My Passport Pro” online? support.wdc.com with dangerous solution (no security)

I wish to encrypt my WD My Passport Pro drive. I receive error With Google I found An error message occurs when attempting to create an encrypted backup on a My Book Thunderbolt Duo in the Mac ...
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2answers
448 views

Logging in to main user turns off the mac

I am not a mac user, and honestly, I have no idea how to use one (besides the terminal). So, a friend asked if I could help them out with fixing their computer. She says the last thing she was on, was ...
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0answers
27 views

Is TRIM enabled for FileVault encrypted disks?

On a stock MacBook Pro without FileVault, TRIM should be enabled out of the box according to wikipedia. Infosec experts warn against TRIM in conjunction with full disk encryption. When ...
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2answers
28 views

Need a cli to check the sha256 hash of a file

To check the sha1 of a file I would use openssl sha1 <file> I'm not sure what to use to check the sha256 hash of the file however, what would you recommend?
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0answers
22 views

Can data be recovered from a drive which was encrypted

I encrypted a USB drive of 16 GB few months back and stored files on it. Yesterday I destroyed its encryption using terminal diskutil cs list command without realizing that it had important data ...
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2answers
99 views

Recover deleted Encrypted OS X Extended volume

I accidentally formatted an external 1TB HD to FAT file system using Disk Utility in Mac OS. The disk used to be HFS+ encrypted. Encryption was done when I created the OS X Extended partition, not ...
0
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1answer
11 views

I've added a second HD into my Macbook 2011 instead of CD-ROM. Is it safe to encrypt it using Finder?

Years ago I changed my cdrom in my Macbook for a second hard drive, and have been using a SSD as a first drive ever since. This HD is shown in Finder, and, clicking on it with two fingers, there's an ...
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1answer
76 views

How to open an encrypted dmg file in Windows?

I made encrypted disk image on my MacBook. Now I want to open it on my PC (Windows 10). How can I open (mount) an encrypted dmg image file in Windows 10?
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0answers
48 views

Keychain multiple

I´m new with Mac OS X, my system is El Captain 10.11.3. A few days ago I use keychain to generate two certificates for special purposes with other email address, do the export and all is ok. As I ...
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1answer
29 views

10.11: Good Samaritan message not showing on Filevault2 unlock screen

You can set up a lock Message under System Preferences => Security & Privacy => General => Set Lock Message. This Message is stored in NVRAM. Under 10.9 Mavericks it was not only shown on ...
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1answer
78 views

OS X 10.11 Disk Utility, encrypted dmg password and keychain

In previous versions of Disk Utility there were checkboxes whether to store the password in the keychain or not while creating an encrypted dmg image. Now there are less options. Does the new version ...
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1answer
28 views

Change encrypted internal HD permissions to prevent password prompts

I have an iMac (running OS X 10.11.3) with a dual disk setup. A ssd for the OS (with Filevault turned on) and a HDD for storage that is formatted OS X Extended and Encrypted. The intention is to ...
2
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1answer
159 views

Encrypt FAT USB drive under El Capitan (10.11)

I have a USB drive I would like to encrypt. It's formatted in FAT (for use with Mac & Win) and I can't seem to find a way to encrypt it as: FileVault doesn't encrypt FAT. TrueCrypt can be ...
0
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1answer
26 views

Is there a limit on logical volume size for FileVault?

I'm curious about (and was unable to find documentation for) any size limits for FileVault in OSX (10.9.5 Server). I'm concerned about any sort of corruption/instability that could occur after ...
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1answer
29 views

Protect files from other administrator accounts

So at work there is a "shared" server that people can run things on that take a long time. I make quite a bit of use of this machine to the point where I made my own login to separate my user files. ...
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0answers
28 views

Can a Standard User format an encrypted drive?

I have recently partitioned my drive into a trap OS. If my Macbook is stolen I want to give the users access to use the device to increase the chances they will connect it to the internet and I can ...
5
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2answers
163 views

Encrypt External Hard Drive for Mac and Linux

I have an external hard drive that I backup with Time Machine. I'm trying to determine the best way (or if it's even possible) to encrypt it so that Time Machine can still back it up and it can be ...
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1answer
37 views

Does using Sleep with FileVault negate some benefits of FileVault?

As I understand it, FileVault makes you login before you computer boots to the OS in order to unlock the drive. This means someone getting ahold of your laptop when it is off cannot get at the data. ...
0
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1answer
180 views

How to encrypt exFAT on external drive?

I have a lot of data on my external drive. The file system is the exFAT. I believe it is not possible to encrypt that filesystem with FileVault. Do you know how (tool maybe) to encrypt exFAT on an ...
0
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1answer
33 views

How to secure my mail in iOS? [duplicate]

Can you please advise what is the best application for email encryption using iPhones and iPads?
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0answers
16 views

I have the password but can't recover data from my encrypted filevault USB drive

I can open the drive and see the top level folders. Sometimes I can see file names, sometimes I can't. If I attempt to remove the encryption I get an error message. It's the same from the Finder or ...
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0answers
39 views

Is possible to create bootable encrypted partitions of Win10 + Debian + DATA on external SSD?

I'm dealing with pretty tricky problem. I want to have external disk completely separated from OS X running on internal SSD. On external SSD should be three partitions: Windows 10 - is possible to ...
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0answers
46 views

Store SSH public/private keys in iCloud Keychain

Is this possible? When going into the "Keys" category in iCloud Keychain, the + button seems to be disabled.
0
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1answer
42 views

How do I get my iPhone backups open

I'm trying to extract my old iPhone's backups. I'm using the iPhone Backup Extractor, and it tells me the status of my backup is "complete and encrypted". I don't recall ever encrypting my backup so ...
0
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1answer
22 views

Formatting mac and encrypted memory

Currently I have a 128GB SD for data in my macbook, but is encrypted using utility. If I format my mac, the stored key will be gone. How can I do this safely? Is there any way to do this without ...
0
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2answers
83 views

how safe is an HDD encrypted with filevault?

I have a macbook pro and I want to encrypt the whole system with filevault. My question is now, how secure are my data for removing hard disk from device and mount it in an external case? For ...
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1answer
24 views

Encrypted Hard Disk troubleshooting

I have problems to read an encypted hard disk. Unfortunatly I do not remember if I did encryted with Time machine or Disk Utitlity. I think I did it with the first one (Time Machine) as I used the ...
0
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1answer
97 views

Is it possible to encrypt the boot disk in El Capitan?

On my iMac running OS X 10.11.3 I'd like to encrypt as much as possible of the built-in disk -- like that I don't need to worry about replacing/sending in a broken disk. From a casual few web ...
2
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1answer
496 views

How (in)vulnerable is OS X to encryption ransomware?

These days, malicious software seems to be infecting Windows computers, encrypting their data against their will, and asking for a Bitcoin ransom in exchange for the encryption key. In order for ...
0
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1answer
85 views

How can I encrypt a disk where diskutil cs convert reports “a problem”, leaves disk unreadable?

I'm trying to encrypt my Time Machine backup volume, but diskutil refuses, and leaves the disk unreadable (but repairable using Linux). How can I proceed? It's a Western Digital Elements 107C 3TB ...
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2answers
127 views

Does FileVault 2 encrypt keys in sleep mode?

I have an early 2015 13" MacBook Pro running OS X 10.11.2 and I'm considering enabling FileVault 2. I realize that the disk is always encrypted, even when the machine is in use and only parts of it ...
0
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1answer
81 views

FileVault: How come a new user can log in without disk password?

I thought I had enabled full volume encryption on my OS X 10.9.5 MBP. Then I created a new user and when rebooting, this new user is able to log in without knowing the password for the disk. The ...
0
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1answer
68 views

Selling old MacBook. Best way to clear HDD?

I'm selling my current MacBook (2011 MPB). Since purchase I have had FileVault enabled (Mac OS X Snow Leopard), thus making me think that I can merely clear the data and not worry about having to ...
9
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5answers
594 views

Portable encrypted USB stick

I would like to have an encrypted USB stick that I can use with Windows and OS X. I could format it as FAT32 and then have a encrypted image files (more than one due to the file size limitation of ...
2
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1answer
31 views

Encrypt home directory only

I have a shared computer that is primarily for my use, but occasionally when I'm out of the office others would like to use it. These others require Administrator access to be able to install ...
6
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2answers
663 views

Is there a way to encrypt data on iCloud?

I currently use Backblaze for online backup. I am thinking of switching to just storing all my documents on my iCloud drive. With Backblaze, you can set an encryption key. Without this key no one ...
2
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1answer
31 views

Use backup drive with Snow Leopard

I have two Macs, one is running Snow Leopard and can't be updated any further. The other is running El Capitan. I use FileVault on the latter and I also want to backup the latter to a 1TB external ...
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1answer
27 views

Encrypting contents of Macbook Air [duplicate]

How much of a performance hit is there when encrypting the contents on a Macbook Air? I'm at the point in its setup where it asks me if I want to encrypt. If I say "no", can I encrypt it later?
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1answer
63 views

Can't unlock encrypted external drive with filevault (osx)

I formated my external drive on mavericks, and then on Lion, sometimes I had to wait some time to unlock the volume. Other times I had to do a disk repair and only after that OSx accepts my password ...