HashCash – Proof of Work CAPTCHA Security & Risk Analysis
wordpress.org/plugins/captcha-hashcashInvisible Proof-of-Work CAPTCHA. No checkboxes, no image grids, no Google, no tracking. Just spam protection that gets out of the way.
Is HashCash – Proof of Work CAPTCHA Safe to Use in 2026?
Generally Safe
Score 100/100HashCash – Proof of Work CAPTCHA has no known CVEs and is actively maintained. It's a solid choice for most WordPress installations.
HashCash – Proof of Work CAPTCHA Security Vulnerabilities
HashCash – Proof of Work CAPTCHA Release Timeline
Maintenance & Trust
HashCash – Proof of Work CAPTCHA Maintenance & Trust
Maintenance Signals
Community Trust
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HashCash – Proof of Work CAPTCHA Developer Profile
1 plugin · 0 total installs