What is Webhook Signature?
A cryptographic signature attached to webhook payloads to verify they came from the expected sender.
Why It Matters
Verifying webhook signatures prevents attackers from sending fake events to your application.
Real-World Example
Checking that a Stripe webhook includes a valid signature before processing a payment event.
“Understanding terms like Webhook Signature matters because it helps you have better conversations with developers and make smarter decisions about your software. You do not need to be technical. You just need to know enough to ask the right questions.”
Related Terms
Webhook
An automatic notification that one app sends to another when something happens
Hashing
Converting data into a fixed-length code that cannot be reversed to reveal the original
Authentication
The process of verifying who someone is, usually through a username and password
Encryption
Scrambling data so only authorised parties can read it
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Related Terms
Authentication
The process of verifying who someone is, usually through a username and password
Webhook
An automatic notification that one app sends to another when something happens
Encryption
Scrambling data so only authorised parties can read it
Hashing
Converting data into a fixed-length code that cannot be reversed to reveal the original
Authorisation
Determining what actions or data a verified user is allowed to access
OAuth
A standard that lets you log into apps using your existing accounts from Google, Facebook, or other providers