Show HN: Replacing CAPTCHAs with adaptive proof-of-work in WordPress

MatthiasNordwig

author • 1 mention

Hacker News

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The solution was intended to comply with EU data privacy law, no cookies, no sniffing, light-weight-size, on my webserver only, beeing invisible for my site visitors and no running costs at all.I came across Hashcash, a proof-of-work approach, to block spam.

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When I implemented it, it worked immediately and blocked 100 percent without blocking any incoming real posts.I was astonished, that no solution existed in the ecosystem allready that covered all forms and was for free.

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Therefore I‘ve turned it into a free wordpress-plugin.It is not only a technical solution, but starts with the business model of spam (mass spamming at low cost), by producing a calculation effort for every single post, that unavoidable.

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And therefore is not exactly unbreakable but becomes very expensive for the spammer and therefore alows only for targeted high quality...

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