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Worried about data restore after deleting it? Use DFS File Shredder: Permanent Delete Data
DFS File Shredder is a data shredding application which provides secure file deletion and secure free space erasing from your Android device. The file remover app allows you to secure delete everything in one tap or you can choose to delete folder and files.
Shredding is the only digitally possible method to permanent delete data from a device. Traditional data removing methods like deleting, formatting and flashing will not entirely remove the data from a device, instead they will just hide this data and make it inaccessible. But these hidden data can be accessed by anyone using data recovery software. 
Data recovery softwares are very cheap and available to anyone. Which makes the possibility of someone else accessing the data, that you already removed, even greater. Delete unwanted files and free up space on your mobile device. 
With DFS File Shredder in your arsenal, you don't have to worry about unauthorized or unlawful recovery of your personal data. Once shredded using this file remover app, that data is gone for good and gone forever. Secure delete everything instantly.
Here is how this file remover app works. It takes just a few simple steps to securely erase content such as files, folders, photos, other file types making it impossible to recover any deleted files through forensic tools and file recovery tools.
DFS Shredder comes with 11 unique algorithms to to delete folder & files, each being better than the other. And the 11th one, Gutmann algorithm, being the most efficient that it can't be recovered even in a forensic laboratory under the supervision of most trained technicians in the world.

ALGORITHMS USED TO ERASE CONTENT
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1) British HMG IS5 Baseline
This method shred files one time. This is the quickest method to secure delete everything. 
2.) NSA 130-2
This method shred files 2 times and there is one final pass to verify shredding.
3.) Russian GOST p50739-95
This method delete unwanted files 2 times using Russian gost algorithm and verifies shredding by reading one time.
4) US DoD 5220.22-M
This method shred files 3 times and there is one final pass to verify shredding by trying to read from shredded location.
5) US Army AR380-19
This method shred files 3 times using US Army algorithm and there is one final pass to verify shredding by trying to read from shredded location.
6) US Air Force 5020
This method shred files 3 times using 1's, 0's & a random character. There is one final pass to verify shredding by trying to read from shredded location.
7) US DoE M205.1-2
Erase content 7 times using random characters and verifies shredding by reading one time.
8) Canadian OPS-II
This method shred files 7 times using 0,1 & a random character and verifies shredding by reading one time.
9) German VSITR
This method shred files 7 times using 0, 1 & 10 and verifies shredding by reading one time.
10) Bruce Schneier
This method delete folder & files 7 times using random characters and verifies shredding by reading one time.
11) Gutmann
This method shred files 35 times.

Features of DFS File Shredder: Permanent Delete Data
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* Find and erase content like media files and documents easily
* Shred multiple files and folders in one go
* Instant Shredding option available : select multiple files from gallery/File manager and go to Share > Shredder
* Wipe free disk space to prevent data restoration
* Shred external storage devices connected to your phone
* Permanent delete everything on device in one go.
(This will also shred the memory device connected to your android device)
* Select shredding algorithm
* Set a secure PIN for the app
担心删除后的数据还原？使用DFS文件粉碎机：永久删除数据
DFS文件粉碎机是一个数据粉碎应用程序，可从Android设备提供安全的文件删除和安全的可用空间擦除功能。文件删除器应用程序允许您一键安全删除所有内容，也可以选择删除文件夹和文件。
粉碎是从设备上永久删除数据的唯一一种可能的数字方法。传统的数据删除方法（如删除，格式化和刷新）不会完全从设备中删除数据，相反，它们只会隐藏此数据并使其无法访问。但是，使用数据恢复软件的任何人都可以访问这些隐藏的数据。
数据恢复软件非常便宜，任何人都可以使用。这使得其他人访问您已删除的数据的可能性更大。删除不需要的文件并释放移动设备上的空间。
在您的武器库中使用 DFS文件粉碎机时，您不必担心未经授权或非法恢复您的个人数据。一旦使用此文件删除器应用程序粉碎了该数据，这些数据就永远消失了，并且永远消失了。立即安全删除所有内容。
这是此文件删除器应用程序的工作方式。仅需几个简单的步骤即可安全删除文件，文件夹，照片和其他文件类型等内容，从而无法通过取证工具和文件恢复工具恢复任何已删除的文件。
DFS Shredder带有11种独特的算法来删除文件夹和文件，每一种都比另一种更好。第11个方法是Gutmann算法，它是最有效的方法，即使在法医实验室中，在世界上大多数受过培训的技术人员的监督下，它也无法恢复。

用于擦除内容的算法
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1）英国HMG IS5基准
此方法将文件粉碎一次。这是安全删除所有内容的最快方法。
2.）NSA 130-2
此方法将文件切碎2次，最后通过一遍以验证切碎。
3.）俄罗斯GOST p50739-95
此方法使用俄语gost算法删除2次不需要的文件，并通过读取一次来验证粉碎。
4）美国国防部5220.22-M
此方法将文件切碎3次，并且有最后一步通过尝试从切碎的位置读取来验证切碎。
5）美国陆军AR380-19
这种方法使用美国陆军算法将文件切碎了3次，最后有一次通过尝试从切碎的位置读取来验证切碎。
6）美国空军5020
此方法使用1、0和随机字符将文件切碎3次。最后一道通行证是通过尝试从切碎的位置读取来验证切碎。
7）美国能源部M205.1-2
使用随机字符将内容擦除7次，并通过阅读一次来验证是否切碎。
8）加拿大OPS-II
此方法使用0,1和随机字符将文件切碎7次，并通过读取一次来验证切碎。
9）德国VSITR
此方法使用0、1和10将文件粉碎7次，并通过读取一次来验证粉碎。
10）布鲁斯·施耐尔
此方法使用随机字符删除文件夹和文件7次，并通过读取一次来验证粉碎。
11）古特曼
此方法将文件切碎35次。

DFS文件粉碎机的功能：永久删除数据
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*轻松查找和删除媒体文件和文档等内容
*一次性粉碎多个文件和文件夹
*提供即时粉碎选项：从图库/文件管理器中选择多个文件，然后转到共享>粉碎器
*清除可用磁盘空间以防止数据恢复
*切碎连接到手机的外部存储设备
*永久删除设备上的所有内容。
（这也会切碎连接到您的android设备的存储设备）
*选择切碎算法
*为应用设置安全PIN


SHREDDER : Data Eraser

SHREDDER : Data Eraser的最新版本