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Questions tagged [deletion]

Secure deletion of data.

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Why are drives overwritten three times when being disposed of? [duplicate]

I am looking at the secure disposal of old flash drives, and one of the standards I have come across says that they should be overwritten three times. Why is one time not enough? I assume doing the ...
Arlix's user avatar
  • 1,489
2 votes
1 answer
270 views

shred - different device size

When I need to properly wipe a harddrive, I tend to use shred on the whole device, i.e. pointing shred to the /dev/sdX without regard to particular partitions; however I noticed that the device size ...
cyber-guard's user avatar
5 votes
1 answer
160 views

What method could a white-box attacker use to track the deletion of memory / files?

A rather theoretical question: Assuming there is memory with a malware inside it. The malware's goal is to detect if a legit application is about to delete contents of the memory. If recognized, the ...
Richard Laurant's user avatar
1 vote
2 answers
9k views

What is the difference between wiping vs deleting? [duplicate]

I was reading about the Mask malware on Kaspersky. And they mentioned this: “Several reasons make us believe this could be a nation-state sponsored campaign. First of all, we observed a very high ...
stackErr's user avatar
  • 137
1 vote
1 answer
6k views

Does microwaving a CD erase it?

I just read the question: Does microwaving a hard drive erase it? and now I am curious too... does microwaving a CD (or for that matter, DVD, or blu-ray) erase it? My initial thought is that some ...
Jonathan's user avatar
  • 3,157
9 votes
2 answers
24k views

Does microwaving a hard drive erase it?

Kind of a silly question, but I'm genuinely curious: (in part because I recently saw several questions that refer to "nuking" a hard drive...) what would a microwave DO to an HDD? Would it erase data ...
KnightOfNi's user avatar
  • 2,287
29 votes
7 answers
55k views

How do I securely erase USB flash drives?

I would like to know if there is a way to securely erase USB flash drives without a chance to recover data from it once it has been erased. I know, that programms like DBAN can be used to securely ...
user295031's user avatar
45 votes
3 answers
78k views

What is the difference between ATA Secure Erase and Security Erase? How can I ensure they worked?

I'd like to wipe a stack of drives (spinning and SSD) securely. I'm familiar with the ATA Secure Erase (SE) command via hdparm, but I'm not sure if I should use the Security Erase (SE+) command ...
Sophit's user avatar
  • 563
0 votes
1 answer
2k views

Securely wipe external drive with Windows only [duplicate]

Consider following 2 disk wipe procedures, using only vanilla Windows installation: First do a quick-format to make the disk appear empty, then do one of these: Just do full format of the disk. ...
hyde's user avatar
  • 101
3 votes
3 answers
4k views

Protect partition from formatting

How can i protect my Linux and Windows partitions from being wiped,from a windows installation CD,with password?
ShinobiWPS's user avatar
4 votes
1 answer
130 views

What is the security significance of Keyboard and Touchpad controller chips?

In this article from Privacy International, it indicates that when GCHQ undertook the task of destroying sensitive data on system belonging to the Guardian newspaper, in addition to the Storage media, ...
Rory McCune's user avatar
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3 votes
1 answer
1k views

Tools for Verifying Secure Deletion [closed]

It is recommended to verify the zeroing-out was done properly when you try to secure delete a HDD. From this post, some drives with firmware bugs prevent secure erase from working properly. What are ...
moey's user avatar
  • 131
0 votes
1 answer
837 views

Securely erase data from a flash drive vs hard disk [duplicate]

I'm studying for an exam, that's why I don't need software for that purpose (which is what other questions I found on this topic provide) but an explanation. The concrete questions I'm trying to ...
Verena Haunschmid's user avatar
2 votes
2 answers
8k views

How to prevent user from recovering my iPhone data?

If I'm about to sell my iPhone 5, is there a way to make sure that the buyer won't be able to recover anything from my data? Both data that has been recently deleted and data that has been deleted ...
HSN's user avatar
  • 1,208
4 votes
2 answers
232 views

What are the benefits of having multiple overwriting patterns for secure deletion? [duplicate]

When installing a new AIX server, there is a possibility to use several patterns for secure deletion. My question: Is it necessary to use several patterns? What is the benefit from having several ...
newuser999's user avatar
1 vote
3 answers
4k views

Decrypting a Truecrypt system - how to make deleted files unrecoverable? [duplicate]

If I have full disk encryption on my computer and want to decrypt it, but want to delete senstive documents before decrypting, how do I ensure they are unrecoverable post-decryption? Edit: I suspect ...
guest101010's user avatar
5 votes
1 answer
4k views

Can you securely wipe an SSD by filling the remaining space with bogus data? [duplicate]

It's been established that, thanks to our good friend Mr. Wear Leveler, wiping data from an SSD is very difficult. I understand that the one thing you don't want to do is actually attempt to shred ...
oscilatingcretin's user avatar
-4 votes
1 answer
280 views

Is there any virus that deletes Personal Folder? [closed]

I noticed that some special folders of my ex-HDD have been deleted. 'Personal' is one of them. Is there any virus that does that?
JalalJaberi's user avatar
12 votes
2 answers
2k views

Ensure data doesn't linger after being deleted

I'm trying to make a service that keeps as little data on its users as possible. To that end, I want to make sure that someone using forensic tools won't gain any more information than I would by ...
Nick ODell's user avatar
4 votes
2 answers
4k views

Do any web browsers create cached copies of local HTML files?

Suppose that we create a sensitive file as a HTML document, and then view that file with a web browser such as Firefox, or other. Is it possible that the file is treated as if it were a document ...
Kaz's user avatar
  • 2,283
8 votes
2 answers
6k views

ATA security erase on SSD

Is it possible to recovery data from SSD, that was secure erased (https://ata.wiki.kernel.org/index.php/ATA_Secure_Erase), by IT or professional data recovery company? Does this type of erasing reduce ...
Artur Szymczak's user avatar
7 votes
1 answer
7k views

How secure is the Windows 8 "Reset your PC" function?

Windows 8 has a feature to "Reset your PC" so that if someone needs to give their computer away, the recipient won't be able to recover data. How secure is it?
securityuser's user avatar
5 votes
2 answers
2k views

Is it nescecary to wipe and reset the MBR when laptop changes owners even if full disk encryption is used?

Where I'm currently working we use full disk encryption and after a laptop transfer owners we use a secure erasure program. This is quite time consuming and I'm wondering is it necessary? For the disk ...
Celeritas's user avatar
  • 10.1k
3 votes
1 answer
7k views

What method of secure erase is sufficient for MacBook Pro SSD Drives? [duplicate]

I would like to securely erase the hard drive of a SSD in a MacBook Pro. The Disk Utility does not give me the option to wipe this drive even when I boot into the System Partition. (it is greyed out)...
makerofthings7's user avatar
18 votes
2 answers
3k views

Secure wiping of EEPROM and flash memory

Older magnetic storage exhibited some data remanence, so a recommendation emerged to wipe data by overwriting it multiple times with varying patterns — the “Gutmann wipe”. More recent hard disk ...
Gilles 'SO- stop being evil''s user avatar
10 votes
1 answer
5k views

How to properly delete all data from cell phones?

Lately I've been thinking to get rid of some old smartphones; among them an Android device and a Blackberry. Not selling or recycling them is the ideal solution, however, I still would like to know ...
Kayla's user avatar
  • 203
3 votes
2 answers
1k views

Shutdown: Clear virtual memory pagefile

I was reading about Windows Local Policy of "Shutdown: Clear virtual memory pagefile". I need some clarification on this brief policy description: What do it mean by operating system that allow ...
Ali Ahmad's user avatar
  • 4,824
6 votes
3 answers
367 views

Disk Erasing Security - Odd Number of Writes

As one can find in the Disk Utility/Erase/Security Options section, there are two options for erasing disks securely - zero out 7 times or zero out 35 times. Where these numbers come from?
user avatar
9 votes
8 answers
16k views

Overwriting hard drive to securely delete a file?

I am working on a computer that I am not allowed to install new software on. It does not have secure delete software installed. Suppose I have a file (or files) that are sensitive that I'd like to ...
Drew's user avatar
  • 107
3 votes
5 answers
9k views

Prove that you deleted the file

Is it possible to prove a date that you Deleted a file through the recycle bin? I delete a folder of pictures 2 months ago and somebody is asking to prove that I did it.
David Allen's user avatar
4 votes
1 answer
5k views

Secure erase iOS devices

All iOS devices from the iPhone 3GS have a hardware encryption chip, right? When you erase an iOS device with the "Erase All Content and Settings" menu item or via Remote Wipe the encryption keys are ...
joshu's user avatar
  • 567
6 votes
2 answers
2k views

What's a good secure file deletion software?

I've used cipher \w which is built into Windows to overwrite free space, but I'm looking for a tool that securely deletes files which have not been deleted yet. It would be a plus (but certainly not ...
Celeritas's user avatar
  • 10.1k
1 vote
2 answers
2k views

securely destroying data on an external hard drive [duplicate]

Possible Duplicate: How can I reliably erase all information on a hard drive? I purchased an external hard drive and have been saving various things including system backups to it. I got it a ...
Celeritas's user avatar
  • 10.1k
6 votes
8 answers
640 views

A computing environment that saves no data

I want to use a laptop which doesn’t save any data, history, passwords anywhere in it. All state information should be destroyed once it is turned off or rebooted, without removing my ability to use ...
user16766's user avatar
0 votes
1 answer
302 views

How far beyond using Shred should I go when deleting files? [duplicate]

Possible Duplicate: How can I reliably erase all information on a hard drive? I'm looking to securely erase my files. Is shred the best option besides ditching the hardware? To what lengths ...
Keegan Black's user avatar
2 votes
4 answers
6k 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 ...
Thomas's user avatar
  • 3,861
58 votes
6 answers
162k views

Can wiped SSD data be recovered?

I was reading another post on destroying IDE drives, and how you could remove data, wipe it, or just destroy the drive. The removed data would still be there in some state, although not easily ...
cutrightjm's user avatar
  • 1,734
4 votes
5 answers
5k views

Is running an erase tool after an OS install sufficient to ensure no data from the old install is recoverable?

How secure do you consider this process? A drive has data from a previous OS installation. A new OS installation is made on the drive, and Heidi Eraser is run on free space. What are the chances of ...
user avatar
104 votes
4 answers
73k views

Why is writing zeros (or random data) over a hard drive multiple times better than just doing it once?

Lots of different programs, such as Darik's Boot and Nuke, let you write over a hard drive multiple times under the guise of it being more secure than just doing it once. Why?
Tom Marthenal's user avatar
4 votes
0 answers
1k views

How can you remove your presence from the Internet? [duplicate]

How can you remove your presence from the Internet? For example from social networks, from email servers, from forums etc. Problem is how records of you are identified on the internet? We have well ...
user avatar
8 votes
3 answers
6k views

Can someone tell if you delete deleted files?

I am aware that to delete something completely we will have to use a program that over-writes the deleted file such that it is unrecoverable. Is there anyway to tell that this has happened? Or is the ...
Pacerier's user avatar
  • 3,273
8 votes
3 answers
5k views

How can files be deleted in a HIPAA-compliant way?

Any material I've come up with for data destruction standards relate to completely wiping (ATA Secure Erase) and physically destroying hard drives, but I haven't been able to find much about standards ...
John Straka's user avatar
104 votes
8 answers
44k views

How can I reliably erase all information on a hard drive?

As storage technologies change over time, using different encodings and remappings to deal with sector errors, the best way to permanently erase/wipe/shred data changes also. Methods for flash drives ...
nealmcb's user avatar
  • 20.7k
71 votes
3 answers
39k views

Is it enough to only wipe a flash drive once?

According to the documentation for the "diskscrb" command for wiping conventional hard drives: http://www.forensics-intl.com/diskscrb.html "Conforms to and exceeds the Government ...
LanceBaynes's user avatar
  • 6,219
3 votes
2 answers
642 views

Is it a security issue that Thunderbird only logically deletes emails?

I have several e-mail accounts configured in Thunderbird. I just wanted to move an e-mail from one of my e-mail accounts [A] Trash folder to another accounts [B] Inbox folder. Because the moved e-mail ...
LanceBaynes's user avatar
  • 6,219
3 votes
1 answer
2k views

How do you erase a Blackberry without having direct access to the server?

I have a Blackberry with no access to the BIS or BES server that managed it. How does one erase and reset the device to defaults?
makerofthings7's user avatar
19 votes
11 answers
31k views

I'm leaving my job and want to erase as many personal details etc. as possible; any tips?

Obviously this is very open-ended. But, I'm just paranoid about people going through everything on my laptop after I leave my job. Here are the things I'm planning to do: Completely wipe all browser ...
Tedderz's user avatar
  • 291
11 votes
5 answers
2k views

Encrypting a disk that has stuff on it?

Ok, so a pretty big disk ~1-2TB (90% full, multiple partitions + 2 operating systems on it), needs to be encrypted and zeroed-out, and it's a bit too much data for backing it all up before encryption. ...
tkit's user avatar
  • 3,352

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