Data Shredder - Algorithm settings

Manage these settings from: MenuSettingsPrivacyData Shredder

The Data Shredder settings screen allows you to specify which method Data Shredder uses to shred individual files or entire folders.

Note: Data Shredder is available in Avast Ultimate and Avast Premier only.

Manage Algorithm settings

On the Data Shredder settings screen, use the drop-down menu to select your preferred overwriting method:

  • Random overwrite: overwrites your data with random patterns. The number of times your data is overwritten is determined by the number you specify. Click the text box and type a number of passes (the default number is 1). This is the simplest and quickest 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 method is more secure, but slightly slower than the Random overwrite method.
  • Gutmann method: overwrites your data according to the encoding mechanism used by the drive. The Gutmann method performs the largest number of passes over the data in comparison with other methods. This is the slowest, but the most secure method.