You may be surprised to learn that those files are also not deleted as you think. Data Recovery Services programs like Stellar Phoenix’s Windows Data Recovery Services Professional are specifically created to sift through the sectors of old hard drives (formatted or not) and piece together the remnants of deleted data to compose a complete image of what was deleted on that hard drive.
Therefore, emptying your recycle bin is certainly a step in the right direction, but it is by no means the ideal solution if you want a real deletion with all the guarantees.
To prevent someone from being able to find even the slightest trace of a file on your computer, the best option is to use a third-party program designed to completely wipe a Data Recovery Services hard drive or folder from top to bottom.
Well, not quite. Although it is clear that formatting a hard drive is one of the easiest and most common methods to quickly delete a large amount of data, there are two different types of formatting and neither of them is the best solution to rewrite, thoroughly and completely, the structure of the disk itself.
To begin with, a quick format does not delete all the data on the drive and can be considered more of a technique similar to the “recently deleted” folder we discussed earlier. Technically speaking, the quick format deletes all the files to which it has been applied, but it does not do a second scan to check if the sectors have been deleted correctly, as it does in a full format. Thus, even a basic Twitter data recovery program would be able to restore the remnants left over from the quick format.