Protection of privacy Important files Select Delete or smash

Important confidential documents, completely deleted is absolutely safe? After we install some anti-virus software, we usually have a similar "file Smash" option in the right mouse button, what's the difference between it and our usual file deletion? How do you play the role of "smashing" files?

　　Vary

　　The difference and effect of "deleting files" and "Shredding files"

What is the use of deleting and smashing? When should you delete it? When should it be crushed? In short, after the deletion of the file, when we found that the erroneous deletion of important data, we can use some way to restore it, and smash the file is not recoverable, it will completely remove the file data from the hard disk partition, the normal way will not be able to recover, For example, some special privacy documents do not want to be restored by others (such as the use of other U disk copy things), you can take the "file crushing" method will file "destroy the Corpse".

　　Ask for a low root

The way and principle of "deleting files" and "Shredding files"

　　File deletion

There are two types of Windows deletion files:

One is the normal deletion, that is, when we select the file, press the keyboard delete button or select the "delete" option in the right mouse button. Ordinary Delete just put the file to the Recycle Bin, any deleted files can be recovered in the Recycle Bin, equivalent to delete files after you have "regret medicine" to eat;

The other is a thorough deletion, that is, when you select a file and press the Shift+delete key, the deleted file will not be moved to the Recycle Bin and removed directly from the hard disk partition.

But whether it is normal to delete files, or delete files, after the deletion of files, if we do not have the hard disk partition for read and write operations, the file data information is still "retained" in the hard disk data area. As a result, some hard disk management tools or data recovery software (such as easyrecovery) can easily be recovered from files that have been completely deleted.

　　File smash

As the name suggests, is the computer on the file completely deleted, leaving no traces. Using some file shredding tools, you can do this.

File shredding is not the same as deleting files directly, which is from the Windows file system. The Windows file system includes FAT systems such as FAT12, FAT16, FAT32, and the NTFS file system. In the FAT file system, if you create a file, you need to open a "distribution table" on disk, just like a library bibliography. This table includes a pointer to the address of the contents of the file. The system then reads and writes the file at the address it points to. At the same time, other files, if they are to be created, are prohibited from pointing at this address to prevent file confusion. and the operating system to delete the file is much more convenient: directly to the "Bibliography" to destroy it. The address that the "Bibliography" points to is considered empty. The data in the computer is made up of binary, which appears as "concave" and "convex" on the disk. Because the system cannot predict the details of the file that will be deposited, the contents of the file can be considered random. By mathematical Knowledge, "0" and "1" on the disk have no effect on the speed of the re-writing information.

Our information may be detected by uninvited visitors, can be based on the clues on the disk, to re-establish the entire file, or a part of the file, thus spying on our privacy. That would be bad for us. Therefore, there is the concept of "file shredding".

"File Shredding" is the deletion of content and "bibliography" so that the contents of the file are not known to anyone. And the general file shredding software can be word, WPS and other tools in the history and system created temporary files deleted, so that no one can know our privacy.

　　Delete Powder operation

"Regret medicine" to eat safely and completely

In the day-to-day Office applications, encountered unwanted documents are always readily deleted, when found after the deletion of the big cry for help, so may wish to delete the file into the Recycle Bin, and before the deletion to confirm. Right-click the Recycle Bin icon for the desktop, select Properties to open the Properties dialog box, on the Global tab, make sure the Show Delete confirmation dialog box is selected (see Figure 1) so that each deletion prompts you to delete the file into the Recycle Bin, even if you find the file deleted accidentally, you can go to the Recycle Bin to select the file and restore it. For a second operation or even directly press the Ctrl+z key, deleted files are immediately back.

Figure 1

For some of the documents do not need to confirm, do not want others to use some way to recover, can be directly "broken". If you have a rising antivirus set installed in your computer, right-click on the file (folder) you want to smash to select "Smash file", will open the File Shredder window, if you need to smash other files, and then drag and drop into the Shredder window, click "Start" to start smashing (Figure 2).

Figure 2

Now many anti-virus software are integrated with similar functions, the principle is basically the same. In addition, you can choose some more professional document shredding tool, here is no longer specifically introduced