Shredo
Shredo
1.2.7

5.0

Shredo free download for Mac

Shredo1.2.7

15 December 2019

File shredder and privacy cleaner.

Overview

Shredo is a beautiful, functional file-shredding and privacy scan utility. It permanently shreds files, folders, and external volumes' contents to keep information secure and impossible for anyone to retrieve. Depending on security level and data-erase speed, you have 3 shredding methods at your disposal:

  • 1-pass - Offers good security and quickest erase of data. It deletes access information to your files and writes random bytes over the data once.
  • 7-pass - Slower speed, but better security than 1-pass. Writes over data 7 times, based on US Department of Defence (DoD) 5220-20 M standard algorithms.
  • 35-pass - Slowest, but offers the best security. Erases file access info and writes over the data 35 times, based on the Gutmann method for deletion.

Shredo supports external volumes and flash drives, but depending on their size and method selected, shredding time many vary.

With a Privacy Scan feature - you can remove browser history, cookies and other privacy threats from your Mac.

What's new in Shredo

Version 1.2.7:
  • Some Catalina improvements and optimizations;

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How would you rate Shredo app?

4 Reviews of Shredo

Big Johnson
10 September 2017
Version: 1.2.3

Most helpful

A 35-pass wipe is 100% unnecessary and shouldn't even be included in shredders anymore.

Developers only include it nowadays because there are still ignorant computer users who believe that's the best software method for erasing data on today's drives.

And those clueless folks won't buy an app that's missing that feature, even though it should never be used.



Mr. Gutmann himself later published the following statement about his original paper:

"In the time since this paper was published, some people have treated the 35-pass overwrite technique described in it more as a kind of voodoo incantation to banish evil spirits than the result of a technical analysis of drive encoding techniques. As a result, they advocate applying the voodoo to PRML and EPRML drives even though it will have no more effect than a simple scrubbing with random data. In fact performing the full 35-pass overwrite is pointless for any drive since it targets a blend of scenarios involving all types of (normally-used) encoding technology, which covers everything back to 30+-year-old MFM methods (if you don't understand that statement, re-read the paper). 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 passes. For any modern PRML/EPRML drive, a few passes of random scrubbing is the best you can do. As the paper says, "A good scrubbing with random data will do about as well as can be expected". This was true in 1996, and is still true now."



If you're one of those who are still under the voodoo spell of believing you absolutely, unequivocally require 35 passes to erase your porn (sorry, I mean data), then you ought to see a witch doctor to get that spell removed so you can emerge into the modern world where a few random overwrites on a HDD is enough, it's difficult and/or unnecessary to securely delete files an a SSD, and 35 passes is nothing more than ancient technology - like a UNIVAC I computer.

Stellar Data Recovery says:
"SSDs use a different mechanism to store data than mechanical hard drives. When you delete a file on your SSD, a TRIM command is issued to the drive by the operating system. This results in permanent erasure of the file contents from the SSD. Hence, a simple delete operation will clean data off your SSD. You do not require wiping the SSD using disk wipe utilities."



All that said, I won't use any shredder that doesn't offer a 3-pass option, because I feel that three is plenty for most files, and 7 is enough for everything else.
At least if you're only hiding stuff from family or co-workers and not the po-po or feds.

I've been using ShredIt X for years, and it lets you choose from fifteen different number of writes, as well as which pattern
is used, including ones that meet govt. specs.

That's on my Fusion HDD. When I buy a SSD I'll need to reevaluate the necessity of multiple overwrites.
(2)
Big Johnson
10 September 2017
Version: 1.2.3
A 35-pass wipe is 100% unnecessary and shouldn't even be included in shredders anymore.

Developers only include it nowadays because there are still ignorant computer users who believe that's the best software method for erasing data on today's drives.

And those clueless folks won't buy an app that's missing that feature, even though it should never be used.



Mr. Gutmann himself later published the following statement about his original paper:

"In the time since this paper was published, some people have treated the 35-pass overwrite technique described in it more as a kind of voodoo incantation to banish evil spirits than the result of a technical analysis of drive encoding techniques. As a result, they advocate applying the voodoo to PRML and EPRML drives even though it will have no more effect than a simple scrubbing with random data. In fact performing the full 35-pass overwrite is pointless for any drive since it targets a blend of scenarios involving all types of (normally-used) encoding technology, which covers everything back to 30+-year-old MFM methods (if you don't understand that statement, re-read the paper). 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 passes. For any modern PRML/EPRML drive, a few passes of random scrubbing is the best you can do. As the paper says, "A good scrubbing with random data will do about as well as can be expected". This was true in 1996, and is still true now."



If you're one of those who are still under the voodoo spell of believing you absolutely, unequivocally require 35 passes to erase your porn (sorry, I mean data), then you ought to see a witch doctor to get that spell removed so you can emerge into the modern world where a few random overwrites on a HDD is enough, it's difficult and/or unnecessary to securely delete files an a SSD, and 35 passes is nothing more than ancient technology - like a UNIVAC I computer.

Stellar Data Recovery says:
"SSDs use a different mechanism to store data than mechanical hard drives. When you delete a file on your SSD, a TRIM command is issued to the drive by the operating system. This results in permanent erasure of the file contents from the SSD. Hence, a simple delete operation will clean data off your SSD. You do not require wiping the SSD using disk wipe utilities."



All that said, I won't use any shredder that doesn't offer a 3-pass option, because I feel that three is plenty for most files, and 7 is enough for everything else.
At least if you're only hiding stuff from family or co-workers and not the po-po or feds.

I've been using ShredIt X for years, and it lets you choose from fifteen different number of writes, as well as which pattern
is used, including ones that meet govt. specs.

That's on my Fusion HDD. When I buy a SSD I'll need to reevaluate the necessity of multiple overwrites.
(2)
Mart°n
16 November 2016
Version: 1.0.2
The App may work well on traditional Harddisks (HDDs) but it is useless and only adds to wear on modern Solid State Drives (SSDs and Flash-Drives). This is because the SSD controller chips don’t write the ”overwrite data“ onto the same blocks as the former file but uses different memory cells to store the new data. Therefore it’s not possible to overwrite a strict defined flash-memory cell with such a tool.
(3)
5
siamlotus
02 November 2016
Version: 1.0.2
Great app. for those that still have HDD's now that Apple have taken secure delete out of the OS. Reasonable price too compared to others.
(2)
5
Prince-Isaac
16 July 2016
Version: 1.0.1
A very handy little app that does what it says, well at least as far as I can tell. I haven't the knowledge or tools to try to reconstruct a drive that's been erased with such a utility so you kind of have to go on faith.
(3)
Show comment (1)
$6.99Buy Now

5.0

App requirements: 
  • Intel 64
  • OS X 10.11.0 or later

Downloaded & Installed 2,911 times

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