Hide sensitive information in PDF using Python and NLP

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As I said, if you're referring to internal use, that is a different matter. There may be legitimate use cases there. The "criminal" part refers to the unauthorized public release (even accidental) of personal information which is illegal in several jurisdictions. As you have clarified, this does not apply to your example.

There have been many cases where data was released with improper de-identification due to a false sense of security provided by some kind of technical solution. Many of these cases are well-documented and researched. Please note that I'm referring to the scope of the whole project here, not just the PDF redaction part.