Some webhook providers implement one-time verifications, CRCs, and heartbeat checks to address some of these problems: https://webhooks.fyi/security/one-time-v

Some webhook providers implement one-time verifications, CRCs, and heartbeat checks to address some of these problems: https://webhooks.fyi/security/one-time-verification-challenge https://webhooks.fyi/security/one-time-verification-challeng... https://webhooks.fyi/ops-experience/resiliency https://webhooks.fyi/ops-experience/resiliency Some also don't follow 301s or 302s and will process only specific http responses.