At a construction company I worked for, every time they were done with a computer they took the hard drive out and ran a drill press through it a few times. Not

At a construction company I worked for, every time they were done with a computer they took the hard drive out and ran a drill press through it a few times. Not sure how one would recover that data though. Otherwise a program to 'shred' your data is https://www.bleachbit.org/ https://www.bleachbit.org/ From their website: Designed for Linux and Windows systems, it wipes clean thousands of applications including Firefox, Adobe Flash, Google Chrome, Opera, and more. Beyond simply deleting files, BleachBit includes advanced features such as shredding files to prevent recovery, wiping free disk space to hide traces of files deleted by other applications, and vacuuming Firefox to make it faster. Better than free, BleachBit is open source.