The modern solution for quickly and securely erasing your data is strong encryption, with which mere destruction of the key more or less instantly renders your data irretrievable in practical terms. NOTE: This kind of secure erase is no longer considered safe because modern devices have wear-leveling, block-sparing, and possibly-persistent cache hardware. Wiping SSDs with CCleaner: Because of the. But in the manual for Apple’s Disk Utility (available to read in the Mac’s Terminal app by typing man diskutil), you can read why Apple no longer considers this approach secure: Nwipe can erase an SSD using the traditional writing to every block method. Secure erase writes data over those orphaned files (from once to 35 times on the Mac) until they can no longer be recovered. It lets you find your deleted photos, as long as nothing has been written over them since you “deleted” them. Then, at some time in the future, those bits may be overwritten with new bits, from a new file. They just pretend that those files are no longer there, marking the space they occupy as free. What’s wrong with just putting everything in the trash?Ĭomputers don’t actually delete much when you move your files to the trash.
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