Tag
replay-attacks
Safeguard articles tagged "replay-attacks" — guides, analysis, and best practices for software supply chain and application security.
2 articles
Application Security
Five Ways a Webhook Receiver Goes Wrong
It is a public, unauthenticated endpoint that performs privileged actions on a JSON body from the internet. Everyone knows this, and most implementations still get one of five things wrong in ways that pass every test.
Sep 18, 20265 min read
Best Practices
Webhook security best practices: HMAC signing, replay protection, and IP allowlisting
Stripe gives webhook signatures a 5-minute tolerance window; GitHub signs with HMAC-SHA256. Here's how to build inbound and outbound webhooks that survive both.
Jul 11, 20267 min read
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