Beyond 'Empty Trash': Ensuring Your Deleted Files Are Gone for Good on macOS
Securely emptying the Trash on macOS is vital for protecting sensitive data. Standard deletion methods leave files recoverable, as they aren't immediately overwritten. For newer macOS versions, third-party applications like Permanent Eraser and ShredIt X effectively secure delete files by overwriting them multiple times with random data, ensuring they cannot be recovered.
https://www.macube.com/how-to/secure-empty-trash-macos.html
Enabling FileVault encryption provides an additional layer of security. FileVault encrypts your entire drive, making unauthorized access to any data, including deleted files, extremely difficult.
Advanced users can also use the Terminal's "srm" command to securely delete files from the command line, ensuring they are thoroughly overwritten.
Combining these methods helps ensure that your deleted files are permanently erased, protecting your privacy and data security.