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How to prevent recovery of already deleted files

Probably you know that deleted files can be recovered. This is true - anyone can do it using special programs, especially often this operation performed by police, FBI and other agencies. News are full of events that related to legal and illegal data recovery. Many important financial and personal information was recovered and used against human privacy and financial stability.

Technical background

When you delete some file it's not actually removed from the hard disk, it's just marked as "deleted" and the space which was taken by the file marked as "free". However, the contents of the file still exists on your computer until will be partially or fully overwritten by some new file. These "deleted" files may reside on your computer for years, depending on many factors. Thus, recovery of any file technically possible, but anyway you need some luck also.

Solution

Solution for this problem is to programmatically overwrite all free disk space where content of deleted files was located. In other words: physically wipe free disk space, replace each byte with zeros. This operation on a physical level leaves no chance for recovery. It doesn't make any changes to existing files or programs, so it's completely safe.

Our program was made for this

Like for recovery you will use special program, the same is for anti-recovery - you should use special program to make already deleted files unrecoverable. For example, a program called "Recuva" scans your hard disk for deleted files and recovers them. Our product is an antagonist for this program, some people call it "Anti-recuva". Our program will make deleted files unrecoverable by wiping free disk space, so even "Recuva" or other similar product can't restore them.

MFT table

Our program will also clean Windows OS MFT table. This is very important because small files (which is under 1kilobyte) do not stored on the hard disk as other files, they are stored inside the MFT table with the file header.

Security

Our program includes several security algorithms for data deletion, so you can choose which suits your needs.