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Florida developer secures Netlify home server webhooks with HMAC and timestamps

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A Florida-based developer has detailed a method for securing webhooks sent from Netlify to a home server. The setup addresses security risks like spoofing and replay attacks. The solution uses HMAC-SHA256 signatures and timestamp validation on HTTP POST requests. The sending function signs each payload with a shared secret, and the home server verifies the signature and timestamp. This prevents unauthorized or repeated requests from being processed.

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