This is the slowest, but the most secure method. The Gutmann algorithm performs the largest number of passes over the data in comparison with other methods. Gutmann algorithm: Overwrites your data according to the encoding mechanism used by the drive.This method is more secure, but slightly slower than the Random overwrite method. DOD (Department of Defense) 5220.22-M algorithm: Overwrites your data with several types of data (0, 1, and random characters) within three passes.This is the simplest and quickest method. Click the text box and type a number of passes (the default number is 1). Programs that do this are called file shredder programs, and there are many free ones. Shredding individual files, like wiping entire drives, erases data by overwriting the space with some pattern of 1s and 0s. The number of times AVG overwrites your data is determined by the number you specify. When you shred a piece of data, usually one or more files or folders, you erase whatever it is you selected, and only those items. Random overwrite (selected by default): Overwrites your data with random patterns.You can choose between 3 algorithms that differ according to speed and level of protection: Which algorithm for shredding you want to use: Select your preferred algorithm to encrypt deleted files when they are shredded.Prioritize shredding: shreds your files faster.Show Data Shredder in the Windows context menu: Tick this option to see Shred using AVG in the Windows context menu that appears when you right-click a file or folder from File Explorer or you Windows desktop.
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