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The core of the product is a bunch of regex or something smarter?

Odd that a product that want you to base your legal safety is not more transparent about the actual implementation on the initial page, instead it reads like an advertisement for closed source SaaS.

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answering myself, yes. It is a pile of regex

https://github.com/microsoft/presidio/blob/master/presidio-a...

and i can't find the body of test data easily... that's not good.

They also have a NLP engine, the regexes are just predefined recognizers for known formats.

https://github.com/microsoft/presidio/tree/master/presidio-a...

Serious question - is there anything fundamentally wrong with using regex here?

For the specific example cited (credit card numbers) the Luhn check is very standard. So, no there isn't :)

So you might have more fun with this email one https://github.com/microsoft/presidio/blob/master/presidio-a...

:)

... seriously, they should have broken that down, or used the multi-line with comments pattern, if they really want people to contribute to this.

Yeah, seriously. Are email addresses even regular to the extent that a regex would work 100% of the time?

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