Linked Questions

32 votes
5 answers
12k views

How to safely wipe a USB flash drive [duplicate]

I want to wipe all residual data left behind even after a format on a regular 64GB fash drive, the ones someone can scan and recover data. What's the most efficient but quickest way to do this? Any ...
LtMuffin's user avatar
  • 452
3 votes
4 answers
4k views

SSD is formatted twice and filled twice. Can i recover old deleted data? [duplicate]

I need to recover some old data which were stored on a drive. The data were deleted and the hard drive was formatted twice and filled twice with random data intentionally. First the drive had a ...
Vini7's user avatar
  • 659
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
1 vote
3 answers
861 views

Reccomended way to securely erase SSD storage of a smartphone? [duplicate]

As far as what I understand there are different approaches and I have a few doubts regarding each of them: On the one hand, it seems that factory reset does not securely erase itself data from SSD ...
Lorenzo's user avatar
  • 11
2 votes
1 answer
1k views

Secure way to wipe an entire SSD? [duplicate]

I've read some articles and they appear to suggest the idea of using the dd command to wipe an entire SSD before encrypting it. The drive in question is a Samsung 970 EVO PCIe NVMe V-NAND M.2 2280 ...
Tuyen Pham's user avatar
1 vote
1 answer
166 views

If I re-install an encrypted version of Ubuntu on my laptop and fill my entire SSD up with a large .txt file, does this securely wipe the SSD? [duplicate]

I'm looking for an easy way to securely wipe the SSD of my Ubuntu machine. As I'm using a fairly new Dell XPS 13 and am quite a noob with Ubuntu I don't want to use any fancy commands, that might ...
user avatar
105 votes
8 answers
46k 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
  • 20.8k
58 votes
6 answers
169k 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
  • 1,743
19 votes
11 answers
32k 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
19 votes
4 answers
10k views

Why is writing zeros (or random data) over a hard drive used when writing all ones is more beneficial? [duplicate]

As far as I know, in order to securely delete the hard drive's contents, one should fill it with zeroes or, for added security and harder recoverability, random data first and then all zeroes. In ...
Serban Razvan's user avatar
2 votes
2 answers
7k views

Is it possible to completely wipe a flash memory? [duplicate]

i have a 64 gb micro SDXC memory card that has sensitive files on it and i want to completely erase it but i heard it was impossible to be sure that your data was erased because of wear leveling ? The ...
papabite'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
7 votes
2 answers
2k views

Have anyone tried to extract the encryption key from a SSD?

After reading this forum thread it does not sound like encrypted SSDs provide much protection at all - specifically encryption only occurs between the controller chipset and the NAND storage. Why is ...
Sandra Schlichting's user avatar
4 votes
3 answers
8k views

How do I prevent SSD file recovery?

I use a Kingston V300 SSD (specifically SV300S37A) According to this answer The 'best' modern drives support a vendor-specific secure erase functionality. Examples of this are Intels new 320 ...
Manumit's user avatar
  • 599
6 votes
2 answers
1k views

Do Flash memory (SSD) architecture impacts encryption techniques?

I'm working on encryption techniques on SSD's and my question is: does the erase before write architecture of SSD's has anything to do with the encryption technique? What are the problems I might ...
lferasu's user avatar
  • 151
1 vote
4 answers
2k views

Completely wiping a HDD (i.e. nothing is recoverable) [duplicate]

Possible Duplicate: How can I reliably erase all information on a hard drive? I'm looking to see if there's a method that can completely wipe out the content of a HDD, so that nothing previously ...
laketuna's user avatar
  • 113
1 vote
2 answers
6k views

Wipe free space with zeros, how secure? [duplicate]

Possible Duplicate: How can I reliably erase all information on a hard drive? If I wipe free space with zeros instead of random data to finish fast will that write old file to be unrecoverable, ...
illsecure's user avatar
  • 157
6 votes
3 answers
387 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
2 votes
1 answer
3k views

How can I wipe an infected SSD [duplicate]

Recently my PC fell subject to some malware. The malware is hidden and all the antivirus software can't find/detect it. The things it has done so far is spyware like, it disabled System Restore from ...
Galagyy's user avatar
  • 21
3 votes
2 answers
1k views

Secure file deletion vs wiping free space

Say I only wanted to delete specific files and want to feel confident they can't be recovered. Is it better to use a specific program (such as Eraser) for wiping only the files, or is it better to ...
Celeritas's user avatar
  • 10.2k
4 votes
1 answer
1k views

Howto restore factory default state of an USB pen drive?

The proper way to secure erase a SSD is to issue the SECURITY ERASE UNIT command. Then the SSD controller should send a BLOCK ERASE command to all physical blocks. One caveat: the SSD has to be ...
user avatar
2 votes
1 answer
973 views

Securely erasing USB flash drives from a bootable media

My question refers to securely erasing viruses from the usb flash drives, including the MBR, in case there is one. I was thinking of booting with Linux from a closed CD-R (a cd rather than USB flash ...
user288528's user avatar
0 votes
1 answer
319 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
1 answer
144 views

Would the theory of creating tons of duplicates of a small file, 'wipe' the hard drive?

Mentioned here: https://discussions.apple.com/docs/DOC-5521 I was just curious if this would really work. It makes sense to me. As long as they don't do reverse forensics on the bits on the hard ...
I like to code's user avatar
2 votes
1 answer
228 views

How does the password protect the data keys on an encrypted HDD / SSD?

How is the data key used for full disk encryption protected? Is a wrapping key derived from the password, or is it simply unlocked once the password has been supplied? If an existing or proprietary ...
Maarten Bodewes's user avatar
0 votes
1 answer
164 views

Erasing unused blocks on USB drive

I know that I wipe a USB drive from Linux by doing a dd overwriting the whole device with random data. This however may take a very long time. Is it possible to do this faster (and still safely), by ...
Kjeld Flarup's user avatar