Is the important confidential document deleted or shredded?

Important confidential documents, completely deleted is absolutely safe? After we install Rising anti-virus software, usually there will be a "file shredding" option in the right mouse button, it is different from our usual file deletion? How to play " What is the role of the smashing file?

Each has its own merits, "delete" and "crush" than the ability

When should I delete it? When should it be shredded? In short, after deleting a file, when we find that the important data is deleted by mistake, we can restore it in some way, and the shredding file is irreversible, it will file data. Completely removed from the hard disk partition, can not be restored by ordinary methods, such as some special privacy files do not want to be restored by others (such as after borrowing someone else U disk copy), you can take the "file shredding" approach "destroy the body ".

Looking for the root, what is the difference between the two brothers?

There are two types of files deleted in Windows: one is normal deletion, that is, after we select the file, press the Delete button on the keyboard or select the “Delete” option in the right mouse button, just put the file in the recycle bin, you can recover, mistake After deleting the file, there is also a "repentant medicine" to eat; the other is to completely delete, that is, after selecting the file and pressing the Shift+Delete key, the deleted file will not be moved to the recycle bin and directly deleted from the hard disk partition.

However, if the two methods do not read or write the hard disk partition after deleting the file, the file data information is still "reserved" in the hard disk data area, and is completely eliminated by some hard disk management tools or data recovery software (such as EasyRecovery). Deleted files are still very easy to recover.

File shredding, as the name implies, is to delete files on the computer without leaving traces. This can be done using some file shredding tools.

Why is there a difference between the two? Windows file system includes FAT system such as FART12, FAT16, FAT32 and NTFS file system. In the FAT file system, if you create a file, you need to open an "allocation table" on the disk, just like the library's bibliography. This table includes a pointer to the address of the file content. The file is then read and written by the system at the address pointed to. At the same time, if other files are to be created, they are forbidden to point to this address in case the file is garbled. And the operating system to delete files is much more convenient: you can directly destroy the "bibliography". The address pointed to by the "bibliography" is considered to be empty. The data in the computer is composed of binary and appears as "concave" and "convex" on the disk. Since the system cannot predict the details of the file to be deposited, the contents of the file can be considered random. From the mathematical knowledge, the "0" and "1" in the disk have no effect on the speed of rewriting the information.

Our information may be detected by uninvited guests, and the entire file, or part of the file, can be re-established based on clues on the disk to spy on our privacy. “File Shredding” deletes the content and “Bibliography”, and the content of the file is unknown to anyone. And the general file shredding software can delete the history records in Word, WPS and other tools and temporary files created by the system, so that no one can know our privacy.

Delete operation, "regret medicine" eat safe and secure

In daily office applications, files that are not needed are always deleted directly. When you find the accidental deletion, you can save your life. Therefore, you can put the deleted files into the recycle bin first and confirm before deleting. Click on the “Recycle Bin” icon on the desktop, select “Properties”, and make sure “Show Delete Confirmation Dialog” is selected in the “Global” tab (see Figure 1), so that each time you delete it, you will be prompted to delete the file into the recycle bin. Even if you find the file deleted by mistake, you can enter the recycle bin to select the file and restore it. For the current operation, even press Ctrl+Z directly, the deleted file will be returned immediately. For some documents that are not needed, if you don't want others to recover by some means, you can directly "broken" them. If you have the Rising Anti-Virus package installed on your computer, right-click on the file (clip) you need to smash and select “Crush File” to open the file shredder window. If you need to smash other files, drag and drop them into the shredder window. , click "Start" to start shredding (see Figure 2).

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