A file system is a way of organizing information on a storage device like a computer hard drive.

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On Windows, how to restrict access to a folder, sub folder and files to only some applications (not users)

We have an application which is not per user and can be used by multiple users simultaneously. Data is also shared by all users. The path to the data folders we use is ProgramData\OurAppName\Data ...
2
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3answers
187 views

Wipe free space or take image and wipe entire disk?

Read some of the stuff here regarding wiping disks and securely deleting files. From what I've understood, after deleting (not securely) files they become part of the unallocated(free) space of the ...
2
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1answer
1k views

Is the mount manpage saying nosuid *is* secure, or is *not*?

I'm a bit confused about the description of nosuid in the mount manpage on this RedHat system I'm setting up: nosuid Do not allow set-user-identifier or set-group-identifier bits to take ...
2
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1answer
1k views

Extract SquashFS filesystem with shsq magic number [closed]

for a few days I was trying to extract the filesystem of a router firmware. Checking the image that the vendor provides I can see a SquashFS flag on it: DECIMAL HEX DESCRIPTION ...
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4answers
2k views

Writing file shredder

I want to write a simple file shredder in c++, i.e. a program that deletes a file so that it is not recoverable. Would the following be a secure and correct way to do that? (1) Open the file with ...
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3answers
194 views

How to minimise risk to sensitive data in temp files in shared hosting environment before encryption?

openssl_pkcs7_encrypt() requires the data to be encrypted to be read from a file and so unfortunately it requires sensitive data to be written to temporary file before being encrypted. In a shared ...
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2answers
528 views

best practice for encrypted filesystem inside a file

This is an extension of my question on UNIX. Let's suppose I create a file, map it to /dev/loop0, and create a LUKS partition inside dd if=/dev/zero of=myfile bs=1M count=1000 losetup /dev/loop0 ...
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2answers
98 views

How to secure sensitive information on cloud from administrator (end-to-end encryption)

When I use end-to-end encryption to secure documents and sensitive information on cloud or on computer, there is always a risk of accessing these information by administrator. For example if you use ...
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2answers
111 views

Possible to detect an/or shut off CryptoLocker by limiting total network bytes transferred?

Since a virus infected PC has to download (encrypt) reupload the entire file (to a file server), and repeat the process for every network drive, is is possible to detect this unusually high bandwidth ...
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1answer
259 views

Uploading Executable Files

Using proxy software, I was able to bypass a file upload control file-checking for an asp.net system I am pen testing. I noticed they are saving the file into the database as bytes, and it is ...
1
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1answer
113 views

Best way to secure file removals in Windows remotely

I have Windows 2008 R2 box on colocation. I want to remove certain files with a high degree guarantee it cannot be recovered from physical HDD access. Could someone please explain what levels of ...
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2answers
87 views

Are there any artifacts for filesystem forensics in memory?

I have a memory dump. I know it is infected by a rootkit which uses its own file system installed at the end of the disk. Can there be any artifacts in dmp file to show this?
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2answers
891 views

What does Gazzang zNcrypt actually protect against?

In an effort to increase security of our website, I'm reading up on Gazzang zNcrypt, which claims to protect data in databases from breaches. Technically, it seems to do filesystem encryption. As far ...
1
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1answer
58 views

How much access to the file system does the recent Drupal vulnerability give?

A friends drupal site was hacked. What is strange is that the root directory of the installation at the hosting company (let us call it rootdir) was copied (or renamed) rootdir_hacked and the ...
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1answer
81 views

Finding artefacts of software

I was wondering if there is an established way to tell what running a particular program on a system might leave behind (in terms of changes to a filesystem, such as in Linux). I am thinking of this ...
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0answers
501 views

External hard drives: 'date last accessed' file?

I'm trying to figure out if there's a way to figure out when files on my external hard drive were last opened. I'm using a Seagate Backup Plus, and it's both mac and PC compatible. BUT, I've also read ...
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1answer
1k views

Repair Truecrypt NTFS-partition with undetectable filesystem [closed]

Long story short: Got 1 TB HDD. Created one fullsized (non-system-)partition on that. Encrypt via TC. One time, via boot, Win presumably formats that (and maybe writes some bytes on it). I manage to ...
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4answers
263 views

Free space shredding

I'm an avid fan of file system forensics but I'm an amateur so far. I've been reading up on NTFS forensics and I've noticed you sometimes can know if a file was on a certain volume even if it was ...
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3answers
2k views

Are file permissions set in Unix/Linux effective in Windows or Any other OS?

Consider some files and folder in Unix/Linux OS which are configured for only read access by root, if the hard drive stolen, and used in Windows Environment, are these permissions are still effective? ...
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3answers
137 views

Can a computer's contents be downloaded wirelessly?

So my calculus teacher, who also teaches computer science, claims that a computer's entire filesystem can be downloaded wirelessly by anyone on the same network? As a Ruby on Rails professional, ...
0
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2answers
39 views

Safely generate a non-log file within an application server

How does one go about safely write a temporary file to a location within an application server that is publicly accessible?
0
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1answer
204 views

is there any program that can tell me which files have been transferred from my computer thru the web

Is there a program that can tell me which files have been transferred from my computer thru the web? So if I have virus on my computer that transfer files I will know about it according to the files ...
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0answers
63 views

Considerations for using in-memory file system in a Java web application?

I was reviewing some code for a Java based web application accessible by authenticated users. It used the file system to work with temporary files, some of which have sensitive data. The input is a ...
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1answer
160 views

Secure distributed storing and querying of [medical] data?

Comparing ways of distributing and securely storing and querying structured and schemaless data. Currently I am using MongoDB, but am looking into (Postgres|MySQL)&CryptDB, Cassandra and others. ...
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1answer
3k views

Files deleted by some Employee . How to find what time it happened and whether done from another computer on network? [closed]

My Files got deleted by any Employee . How to find what time it happened and whether done from another computer on network ? The files were in shared drive in the computer. I am using windows 8. What ...
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1answer
64 views

How does one find out the file system / directories structure of a webserver they don't own? [closed]

How does one with simple access rights find out the remote host directory structure? I see that web archives are able to not only backup content on the specified domain, but every folder within it.
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1answer
1k views

Can File Sharing being Controlled by Mac Address? [closed]

I am currently setting up secure environment between 2 pc in isolated network. Just wondering can we do file sharing based on that pc mac address instead of username? The environment is OEM Windows ...
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1answer
136 views

Would this be plausible for a metamorphic virus? Not repeatedly infecting same system

Would this be plausible for a metamorphic virus? When a new generation (for lack of better word) is created it would hard code a random file name, that would be checked to see if the system was ...
-1
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1answer
45 views

Undelete-secure AES software and software for carrying out “full undeletion” free-partition-space zeroing/reformatting on Windows?

It is fairly well known that on Windows, when you delete a file (or folder which may contain any number of files and subfolders possibly containing other files and subfolders and so on), Windows just ...
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4answers
416 views

What role does paging play in respect to security?

What role does paging play in respect to security? By paging I mean memory management technique of splitting file memory into pages I guess the question is does it make files more secure?