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Questions tagged [efs]

Encrypting File System (EFS) is a Windows feature providing filesystem-level encryption.

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Read NTFS / EFS encrypted files on iOS with saved certificate

I have data saved on old NTFS-format hard disks which were encrypted on Windows machines, using EFS (the native file encryption system built into Windows). I encrypted selected files/folders, only, ...
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2answers
236 views

Win10: Access other logged on users' memory

How easily can admin users access the data of other users' running processes on Windows 10? Especially webpages loaded by Chrome. Example Context Bob and Alice share a single Windows 10 ...
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1answer
37 views

Is it possible to separate DRA decryption abilities?

In the name of separation of duties, I was wondering if there is a simple (or even not-so-simple) way of dividing the ability to decrypt an EFS encrypted file such that it would require two DRAs to ...
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1answer
247 views

Decrypting files that were encrypted with EFS?

I was wondering if there was a way to decrypt files that were decrypted with efs. I have an external drive with encrypted files that were taken from an old computer. I have the certificate and I ...
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0answers
76 views

Windows EFS Files Spontaneously Unavailable

We are trying to secure a folder with over 1 million very small text files using Windows EFS on Windows Server 2008 R2. We already have an infrastructure in place for backing up keys and data. We ...
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2answers
1k views

Will encrypted files on a volume still be encrypted when uploaded to a cloud service?

If I encrypt some files in a folder using EFS, and then I upload such files to a cloud service, will they be encrypted on the cloud? While the logical answer seems to be yes, I think in reality the ...
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2answers
704 views

EFS certificate expired and Root CA offline

If an EFS certificate is expiring and attempting to renew itself AND the issuing subordinate which issued that certificate is down, offline, or has it's subordinate certificate expired, will the EFS ...
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1answer
4k views

Is EFS on Windows useless?

So, after reading through the dialog from one the EFS Windows--after encrypting certain files on my system--I ran into a possible complication. If I'm not mistaken, the encrypted file or folders are ...
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1answer
170 views

How is encryption different for Windows yet they are identical?

I right clicked on C:\Users\USERNAME and did advanced -> enable encryption. On one laptop it turned green. The other it shows an icon on the files with a lock. What is the difference between these? ...
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1answer
88 views

Is EFS FINRA and SEC Acceptable

I'm trying to search in their manual but there is nothing explicit being mentioned as to what type and how encryption should be done. Can I assume that if I use EFS on the entire USER directory that ...
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2answers
4k views

How difficult is it to brute-force Windows EFS encryption?

With EFS I have C:\$USER\ encrypted so all files owned and used by said user are encrypted. If this laptop is stolen, am I correct that they could pull the microsoft user password hashes, crack them,...
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369 views

How secure is Windows EFS on Amazon?

We evaluate using Windows EFS on Amazon EBS. There is a report about Windows flaw that allows you to copy data from an encrypted volume as described in this article: http://slashdot.org/topic/bi/the-...