When a file is deleted using a standard method, the contents are preserved and even the filename may be recovered. This is definitely true for ext3 (the file system on most Linux systems) and NTFS (Microsoft Windows) and probably true for other most file systems.
Even BleachBit securely shreds a file, its contents are destroyed behind recovery (as much as is feasible). Nevertheless, the filename may still be recovered.
To enhance the free disk space wiping feature in BleachBit 0.6.1, BleachBit 0.6.2 includes a method for wiping the filenames by overwriting the metadata. In Linux, these are unallocated inodes, and in Windows, these are free Master file table (MFT) entries. They are the same thing.
Not taking this privacy feature for granted, it must be tested.
[z@a bleachbit]$ sudo ./test_wipe.sh umount: /tmp/100mb.ext3: not mounted umount: /tmp/100mb: not mounted 100+0 records in 100+0 records out 104857600 bytes (105 MB) copied, 0.88821 s, 118 MB/s now you see it secret1 secret1 info: starting BleachBit version 0.6.2 debug: wipe_path('/tmp/100mb/') debug: wrote 1021 files and 95354880 bytes now you don't
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