Questions tagged [deletion]

Secure deletion of data.

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498 views

encryption - how to secure files - decrypting exposes them on ssd

Let's say I have an encrypted file. Now I decrypt it but since my computer only has ssd, i decrypt it on the ssd drive. Say, I make changes or I finish using the decrypted file so I encrypt it again. ...
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1answer
646 views

GDPR Deletion Request Tracking Paradox - Suppression Lists

I work at a large-ish tech company with hundreds of websites and some large web applications with a very large number of users. I am planning to propose that we have a central system to track ...
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1answer
17k views

Wiping an SSD with Parted Magic seemed too quick

I'm selling a computer with an SSD (it's a Lenovo ThinkPad Carbon X1). I wiped the drive using Parted Magic. I used the ATA method. I'm not sure what that is but it was the only setting available. It ...
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1answer
157 views

How is cryptoshredding a “sole pragmatic option for data disposal in the cloud”?

I'm studying for the CCSP exam and I think I'm missing something here... In reviewing data destruction/disposal methods, I'm aware that an on-premise IT environment has several options: Physical ...
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1answer
60 views

Erasing files and passes - how to understand them? [duplicate]

A few months ago, I downloaded Edenwaith Permanent Eraser from the edenwaith website and set it to DoE (3x) in the preferences. I am using Mac Mini 2011, MacOS Sierra, and use it to delete files and ...
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3answers
197 views

Wipe data from many storage devices

This software for wipe devices of storage: Active@Kill Disk - Hard Drive Eraser. Eraser. Shredit for Windows. Disk Wipe. Darik's Boot and Nuke (DBAN). I wonder if this software is able to use for ...
3
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1answer
3k views

Router - is there anything to “wipe” before selling

It's a Linksys WRT1900AC. Beyond resetting the firmware is there anything else I should consider as it's been used in a business. I'm thinking about personally identifiable information from a legal ...
3
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2answers
227 views

Wiping a server with sensitive data

ORIGINAL QUESTION: We have servers which we want to wipe and sell due to an environmentally friendly scheme, recycling, reducing carbon footprint etc. The servers have a raid configuration. After ...
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1answer
172 views

Wiping data properly in LUKS encrypted drive

Is it enough just to remove the header of LUKS device to wiping (unrecognizable) the data completely? Or it is recoverable (I don't want to recover though)? I need some safeguard to wiping my ...
1
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1answer
198 views

Does editing a file and saving it permanently overwrite it?

Does editing a file and saving it permanently overwrite it? Is this a foolproof method of data destruction? I have a file that I need to fully erase, is this the way? I am running Linux and the file ...
4
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2answers
620 views

Is it secure to wipe a file in a Virtualbox disk if the vbox disk file is on an ssd?

Preface I searched for an answer to my question and found related questions which do not cover my question completely. Like: On SSD deleting: Can Widped SSD Data be recovered How to securely delete ...
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1answer
586 views

If I sell my printer, can the last printed pages be recovered? And how can I wipe it?

I have a Brother 5470-DW Printer. I want to sell it but wanted to make sure all the last prints can't be recovered. If I sold my printer could the last pages printed be recovered? How can I wipe all ...
3
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1answer
536 views

Is SSD encryption useless on data already present?

The reason I ask this question, is that presumably when contents on an SSD are encrypted, the unencrypted data is overwritten with its encrypted version. This study tells us that overwritten data can ...
2
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1answer
907 views

How to secure erase files and folders? [duplicate]

How to securely erase/delete files or folders in different file systems (NTFS, ext3, ext4) ? Need to delete files so it will be impossible to recover that files and no traces of metadata and traces in ...
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0answers
160 views

Will overwriting a file before deleting guarantee the destruction of the original file's data [duplicate]

Say I have a file I want to erase. Simply deleting it is not enough. It still resides in the recycle bin. Emptying the recycle bin does little as well, the actual data is not deleted just the pointer, ...
2
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1answer
444 views

What happens to a VM when you delete it? [closed]

I was curious what happens when you select "delete all files" option in Virtualbox? Are files saved on the installed OS in Virtualbox recoverable on your hard drive? Is there a secure way I can delete ...
2
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1answer
6k views

How can I delete Telegram messages from their server? [closed]

Since I heard that Telegram stores all the chats including messages, pictures, audio & video material on their servers (cloud) I would like to know how can I delete all of my chats from my phone ...
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2answers
223 views

Use explicit_bzero() to zero entire memory

Functions like bzero(), explicit_bzero() and ZeroMemory are designed to delete sensitive data from RAM (Like keys). Can I use explicit_bzero() to delete entire RAM (e.g. 2 GB RAM)? Is this a feasible ...
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1answer
168 views

Erase RAM while device is on [closed]

Is there anyway to get rid of the data in RAM without powering off the system? or better to say how we can reduce the chance of getting meaning full information from the volatile memory while the ...
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1answer
70 views

Securely erase leftovers of files from the bin in OSX

I have made a mistake and deleted a sensitive file by placing it on the bin, and then empty the bin in OSX 10.12 (Sierra). I have heard this is not a secure way to delete sensitive files. Is there a ...
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1answer
144 views

How to completely remove all traces of a file on Linux? (Overriding everything if needed)

How can I delete a file and completely remove it from the system FOREVER. I does have in mind that it's needed to override it. But how can I do that?
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1answer
314 views

Is disk wiping required for full disk encryption if that disk was encrypted before?

It is generally recommended to safely erase the content of a disk before encrypting it, to avoid some forensic attacks. But is it necessary when that disk was encrypted before ? Wouldn't the data ...
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2answers
146 views

wipe encrypted disk by nulling the first few bytes?

If I encrypt a whole partition with AES, is it secure to just overwrite the first few bytes of the partition in order to make it completly unreadable even if an attacker knows the passphrase to access ...
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0answers
860 views

BIOS rootkit : Computrace and Wiping SSD HPA on Linux + protect it with custom encryption

My primary goal is to close firmware backoors. First, I want to know if my plan might work or not, and if it is a good idea, how to implement it: I erased preinstalled Windows and installed Linux ...
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1answer
130 views

Are there any real life scenarios where usage of the Gutmann method is appropriate? [duplicate]

Peter Gutmann himself wrote the following: If you're using a drive which uses encoding technology X, you only need to perform the passes specific to X, and you never need to perform all 35 ...
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2answers
414 views

Is using video editing software to fill SSD with junk video secure?

I'm about to sell an old 128GB external SSD, and I've read various guides saying it's difficult to be sure that data is erased when using traditional zero-fills etc. I'm on Mac OSx, and I got the ...
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1answer
2k views

Privacy data concern: Facebook account appearing with a search for phone number, despite it never being added - what should I do? [closed]

Something that's concerned me recently is "doxing" or the searching for and posting of personal information. Recently I carried out essentially an audit of my personal security online and discovered a ...
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2answers
350 views

Should I wipe my device when leaving the company? [closed]

I'm leaving my company soon. Only one person in the whole company has admin-rights on client machines and does the reinstalls. To save time only the old userprofile gets deactivated and a new one ...
4
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1answer
463 views

Is it safe to rm -rf an untrusted directory?

There are a lot of linking tools(symlinks, hard links, mount, etc.) available. Suppose a disgruntled employee gets the idea that he's going to hide a link to the root directory or some mission-...
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2answers
235 views

Is there a portable memory device with an offline erase technique? (such as an erase switch?)

I know about the USB devices that have a write protection switch that disables writing on the device side, are there devices that have a similar hardware switch that permanently erases the devices ...
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4answers
2k views

Can live bootable usb be infected by malware on hard disk?

I have an old hard disk which I think has every kind of malware on it, maybe even MBR malware. It is also possible that there is malware for Linux on it too, because the disk is a dual boot Windows XP ...
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4answers
337 views

Is encrypting whole drive with a randomly generated key better than erasing?

I was trying to find better ways of quickly deleting files in such a way that they cant be recovered at all. Is encrypting drive with a completely pseudo random key using some block chain better than ...
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1answer
93 views

How secure is manually over writting files?

Say I have 100 image files, all different names, I batch rename them 1-100.jpg, I then change the extension of all the files to .txt. I then make 100 blank text files and over write the converted ...
3
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1answer
3k views

Securely deleting files from inside a Veracrypt volume

My question relates to this old thread on the Veracrypt forum (I didn't get any response when I posted there, so here I am): https://sourceforge.net/p/veracrypt/discussion/general/thread/bf48efbd/ I ...
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1answer
7k views

Does Amazon S3 deletion “shred” your object

I believe Amazon states that all deletions of objects are irreversible. But for security reasons, how "shreded" is such deletion? For example, supposing a hack to Amazon S3, could anyone recover your ...
4
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1answer
405 views

Best current methods for preventing data leakage from SSD

I'm wondering about the current best practices for ensuring data confidentiality on an SSD used as an OS boot drive (under Linux). Important considerations are: Ensures against data leakage in the ...
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2answers
833 views

Is storing CVV in two parts separately a violation of PCI?

I was going through the integration documents of a payment processor, and as per my understanding of the code, docs and disassembly, they are doing the following: Encrypting the CVV on the server-...
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0answers
103 views

Product Verification System [closed]

I'm thinking about a system that will allow my end users to verify their products with the manufacture key/imei number. I'm planning to check that key against my information saved in server and let ...
1
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1answer
509 views

Safe erase of a Toshiba SSD with Absolute Secure Disk software

I have a SSD drive extracted from a crashed laptop which seems to be working, but it's got a Absolute Secure Disk sofware which asks for password when I try to boot from the drive or denies any access ...
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1answer
172 views

Security of deleted files and their traces

I refer to the following link: Deleted files and their traces I am trying to ensure security of deleted files when copying from one machine to another. The original poster asked if simply copying ...
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1answer
689 views

Is Windows 10's TRIM implementation secure

In terms of data deletion everyone knows that once you delete something from your harddisk it stays there, and is recoverable, until it is overwritten. With classical spinning harddrives, the best ...
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4answers
1k views

How to check whether the erase was secure enough?

Edit: this is not about how to securely erase, but how to check whether the erase was secure enough. I have over written my SSD with very large video files, in order to overwrite any sensitive data I ...
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3answers
3k views

How to erase as much as possible an SSD without ATA Secure Erase?

The question is almost completely answered. However, more details are still needed. See Update 2 down here. I've learnt that the ATA Secure Erase is uncorrectly implemented in SSDs (sources are down ...
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2answers
142 views

Data 'dust' left over other than on the HDD?

I was working on a project which contained very classified information. I am now planning on using the computer for personal work but I'm worried that replacing the HDD won't be enough. Is there any ...
2
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3answers
7k views

How secure is Secure Erase option in BIOS?

I have been exploring data security lately and came across HDD data recovery. I now know that a format simply deletes the "pointers" to files and directories and that data is still there. The only way ...
2
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1answer
331 views

User ID Soft Delete or Hard Delete?

Is there any particular reason (security) for us to implement Soft Delete Mechanism on Deleting User ID or Hard Delete. I am trying to make my user id better for my web application thank you.
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1answer
123 views

How to respond to a user requesting deletion of their online account [closed]

My website occasionally receives requests from users asking for their account to be deleted. The website itself is a dating site that stores messages between users, personal information they add to ...
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3answers
796 views

Is file shredding effective in a virtual machine?

I understand that people with a need to make sensitive data unrecoverable use file shredding to achieve it. This means writing over the physical areas of the storage media in more or less ...
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2answers
439 views

Chances of recovery of data from iPhone 5s if memory has been overwritten 35 times?

Use the app 'shredit!' and do the 35 time overwrite. Then you fill the phone with unnecessary data and then reset it to factory settings and erase. What are the chances of recovery of data that was ...
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2answers
671 views

Is data in iPhone “spare” flash memory also encrypted and shredded?

First I'd like to ask is flash memory used in an iPhone? If yes then please answer my next question. Flash memory uses wear levelling (changing the physical location on the memory of a logical ...