Why Your API Should Use Webhook Signature Verification
from The Developer Tools Podcast with Fexingo: APIs, Infrastructure, and Software for Engineers Hosted by Fexingo
In this episode, Lucas and Luna dig into why webhook signature verification is a non-negotiable safety net for any API that sends event notifications. They walk through a real-world horror story: a popular developer platform that got breached because it didn't verify webhook payloads, letting an attacker inject fake 'payment received' events. They explain how HMAC signatures work, what a timestamp and tolerance window add to the mix, and why replay attacks are the sneaky cousin of forgery. They also compare verification libraries across languages, from Stripe's signed webhooks to GitHub's X-Hub-Signature-256, and share practical tips for handling clock skew and key rotation. If you're building an API that emits events, this episode will save you from a nightmare scenario. Tune in to learn how to implement webhook signature verification the right way, with code examples and battle-tested patterns. #WebhookSecurity #APIDesign #HMAC #SignatureVerification #DeveloperTools #BusinessTechnology #Stripe #GitHub #ReplayAttacks #Timestamps #KeyRotation #ClockSkew #API #Webhooks #Security #Engineering #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo
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