How to Safely Delete Private Data Forever

When you hit delete on a file, in most cases, those 1s and 0s aren’t actually erased. The operating system just marks the space they’re taking up as free for new stuff, so until something new shows up, that data can often be recovered.
What third-party eraser tools do is wipe over your sensitive files with random data, so not even the best recovery utility on the planet can bring them back.
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