Webhook Security

Verify webhook signatures with HMAC-SHA256, prevent replay attacks, and secure your endpoints against malicious requests.

Security is Critical: Always verify webhook signatures before processing events. Without verification, anyone could send fake webhooks to your endpoint and trigger unauthorized actions in your system.

How Webhook Signatures Work

SnipLink signs every webhook payload using HMAC-SHA256 with your webhook secret:

We concatenate the timestamp and request body
We compute an HMAC-SHA256 hash using your secret
We send the signature and timestamp in request headers
Your server recomputes the hash and compares it

If the signatures match, the request is authentic.

Signature Headers

Every webhook request includes these headers:

http

POST /webhooks/sniplink HTTP/1.1
Host: your-domain.com
Content-Type: application/json
X-Sniplink-Webhook-Signature: v1=a8f7d6e5c4b3a2918273645f5e4d3c2b1a0f9e8d7c6b5a4938271605f4e3d2c1
X-Sniplink-Webhook-Timestamp: 1707225600

X-Sniplink-Webhook-Signature: The HMAC-SHA256 signature (prefixed withv1=)
X-Sniplink-Webhook-Timestamp: Unix timestamp when the webhook was sent

Verification Implementation

Node.js (Express)

javascript

const crypto = require(&#039;crypto&#039;);

const WEBHOOK_SECRET = process.env.SNIPLINK_WEBHOOK_SECRET;

function verifyWebhookSignature(req) {
  const signature = req.headers[&#039;x-sniplink-webhook-signature&#039;];
  const timestamp = req.headers[&#039;x-sniplink-webhook-timestamp&#039;];
  const body = req.rawBody; // Important: use raw body, not parsed JSON

  // 1. Check timestamp is recent (prevent replay attacks)
  const now = Math.floor(Date.now() / 1000);
  const timestampAge = now - parseInt(timestamp);

  if (timestampAge > 300) { // 5 minutes
    console.error(&#039;Webhook timestamp too old&#039;);
    return false;
  }

  // 2. Compute expected signature
  const payload = `${timestamp}.${body}`;
  const expectedSignature = crypto
    .createHmac(&#039;sha256&#039;, WEBHOOK_SECRET)
    .update(payload)
    .digest(&#039;hex&#039;);

  // 3. Compare signatures (timing-safe comparison)
  const receivedSignature = signature.replace(&#039;v1=&#039;, &#039;&#039;);

  return crypto.timingSafeEqual(
    Buffer.from(expectedSignature),
    Buffer.from(receivedSignature)
  );
}

// Express middleware
app.post(&#039;/webhooks/sniplink&#039;, express.raw({ type: &#039;application/json&#039; }), (req, res) => {
  // Store raw body for signature verification
  req.rawBody = req.body.toString(&#039;utf8&#039;);

  // Parse JSON after storing raw body
  req.body = JSON.parse(req.rawBody);

  // Verify signature
  if (!verifyWebhookSignature(req)) {
    return res.status(401).json({ error: &#039;Invalid signature&#039; });
  }

  // Process webhook
  console.log(&#039;Verified webhook:&#039;, req.body.type);
  res.status(200).json({ received: true });
});

Security tip: You must verify the signature against the raw request body, not the parsed JSON. Parse JSON only after verification.

Python (Flask)

python

import hmac
import hashlib
import time
from flask import Flask, request, jsonify

app = Flask(__name__)
WEBHOOK_SECRET = &#039;your_webhook_secret'

def verify_webhook_signature():
    signature = request.headers.get(&#039;X-Sniplink-Webhook-Signature')
    timestamp = request.headers.get(&#039;X-Sniplink-Webhook-Timestamp')
    body = request.get_data(as_text=True)

    # 1. Check timestamp is recent
    now = int(time.time())
    timestamp_age = now - int(timestamp)

    if timestamp_age > 300:  # 5 minutes
        return False

    # 2. Compute expected signature
    payload = f"{timestamp}.{body}"
    expected_signature = hmac.new(
        WEBHOOK_SECRET.encode(&#039;utf-8'),
        payload.encode(&#039;utf-8'),
        hashlib.sha256
    ).hexdigest()

    # 3. Compare signatures (timing-safe)
    received_signature = signature.replace(&#039;v1=', '')

    return hmac.compare_digest(expected_signature, received_signature)

@app.route(&#039;/webhooks/sniplink', methods=['POST'])
def handle_webhook():
    # Verify signature
    if not verify_webhook_signature():
        return jsonify({&#039;error': 'Invalid signature'}), 401

    # Process webhook
    event = request.get_json()
    print(f"Verified webhook: {event[&#039;type']}")

    return jsonify({&#039;received': True}), 200

PHP

php

<?php

$webhookSecret = getenv(&#039;SNIPLINK_WEBHOOK_SECRET');

function verifyWebhookSignature() {
    global $webhookSecret;

    $signature = $_SERVER[&#039;HTTP_X_SNIPLINK_WEBHOOK_SIGNATURE'];
    $timestamp = $_SERVER[&#039;HTTP_X_SNIPLINK_WEBHOOK_TIMESTAMP'];
    $body = file_get_contents(&#039;php://input');

    // 1. Check timestamp is recent
    $now = time();
    $timestampAge = $now - intval($timestamp);

    if ($timestampAge > 300) { // 5 minutes
        return false;
    }

    // 2. Compute expected signature
    $payload = $timestamp . &#039;.' . $body;
    $expectedSignature = hash_hmac(&#039;sha256', $payload, $webhookSecret);

    // 3. Compare signatures (timing-safe)
    $receivedSignature = str_replace(&#039;v1=', '', $signature);

    return hash_equals($expectedSignature, $receivedSignature);
}

// Handle webhook
if ($_SERVER[&#039;REQUEST_METHOD'] === 'POST') {
    if (!verifyWebhookSignature()) {
        http_response_code(401);
        echo json_encode([&#039;error' => 'Invalid signature']);
        exit;
    }

    $event = json_decode(file_get_contents(&#039;php://input'), true);
    error_log(&#039;Verified webhook: ' . $event['type']);

    http_response_code(200);
    echo json_encode([&#039;received' => true]);
}
?>

Go

package main

import (
    "crypto/hmac"
    "crypto/sha256"
    "crypto/subtle"
    "encoding/hex"
    "encoding/json"
    "fmt"
    "io"
    "net/http"
    "strconv"
    "strings"
    "time"
)

const webhookSecret = "your_webhook_secret"

func verifyWebhookSignature(r *http.Request, body []byte) bool {
    signature := r.Header.Get("X-Sniplink-Webhook-Signature")
    timestamp := r.Header.Get("X-Sniplink-Webhook-Timestamp")

    // 1. Check timestamp is recent
    ts, err := strconv.ParseInt(timestamp, 10, 64)
    if err != nil {
        return false
    }

    now := time.Now().Unix()
    if now-ts > 300 { // 5 minutes
        return false
    }

    // 2. Compute expected signature
    payload := fmt.Sprintf("%s.%s", timestamp, string(body))
    mac := hmac.New(sha256.New, []byte(webhookSecret))
    mac.Write([]byte(payload))
    expectedSignature := hex.EncodeToString(mac.Sum(nil))

    // 3. Compare signatures (timing-safe)
    receivedSignature := strings.TrimPrefix(signature, "v1=")

    return subtle.ConstantTimeCompare(
        []byte(expectedSignature),
        []byte(receivedSignature),
    ) == 1
}

func handleWebhook(w http.ResponseWriter, r *http.Request) {
    // Read body
    body, err := io.ReadAll(r.Body)
    if err != nil {
        http.Error(w, "Cannot read body", http.StatusBadRequest)
        return
    }
    defer r.Body.Close()

    // Verify signature
    if !verifyWebhookSignature(r, body) {
        http.Error(w, "Invalid signature", http.StatusUnauthorized)
        return
    }

    // Parse event
    var event map[string]interface{}
    if err := json.Unmarshal(body, &event); err != nil {
        http.Error(w, "Invalid JSON", http.StatusBadRequest)
        return
    }

    fmt.Printf("Verified webhook: %s\n", event["type"])

    w.WriteHeader(http.StatusOK)
    json.NewEncoder(w).Encode(map[string]bool{"received": true})
}

Replay Attack Prevention

The timestamp header prevents replay attacks. Always check that the timestamp is within an acceptable range:

Recommended: ±5 minutes (300 seconds)
Minimum: ±1 minute (allows for clock skew)
Maximum: ±15 minutes (only if needed)

Clock Synchronization: Ensure your server's clock is synchronized with NTP. Clock drift can cause legitimate webhooks to be rejected.

Secure Webhook Endpoints

1. Always Use HTTPS

Webhook URLs must use HTTPS. HTTP endpoints are rejected by SnipLink.

text

✅ https://your-domain.com/webhooks/sniplink
❌ http://your-domain.com/webhooks/sniplink (rejected)

2. Keep Secrets Secure

Store webhook secrets in environment variables, not in code
Use a secrets manager (AWS Secrets Manager, HashiCorp Vault, etc.)
Never commit secrets to version control
Rotate secrets periodically (every 90 days)

3. Rate Limiting

Implement rate limiting to prevent abuse:

javascript

const rateLimit = require(&#039;express-rate-limit&#039;);

const webhookLimiter = rateLimit({
  windowMs: 60 * 1000, // 1 minute
  max: 100, // Max 100 requests per minute
  message: &#039;Too many webhook requests&#039;,
  standardHeaders: true,
  legacyHeaders: false,
});

app.post(&#039;/webhooks/sniplink&#039;, webhookLimiter, handleWebhook);

4. IP Whitelisting (Optional)

For additional security, you can whitelist SnipLink's webhook IP addresses. Contact support for the current IP ranges.

Testing Signature Verification

Test your verification implementation with this example:

javascript

const crypto = require(&#039;crypto&#039;);

// Test values
const secret = &#039;test_secret_key&#039;;
const timestamp = &#039;1707225600&#039;;
const body = &#039;{"id":"evt_123","type":"link.created","data":{}}&#039;;

// Compute signature
const payload = `${timestamp}.${body}`;
const signature = crypto
  .createHmac(&#039;sha256&#039;, secret)
  .update(payload)
  .digest(&#039;hex&#039;);

console.log(&#039;Signature:&#039;, &#039;v1=&#039; + signature);

// Test webhook request
const testRequest = {
  headers: {
    &#039;x-sniplink-webhook-signature&#039;: &#039;v1=&#039; + signature,
    &#039;x-sniplink-webhook-timestamp&#039;: timestamp,
  },
  rawBody: body,
};

// Should return true
console.log(&#039;Verification:&#039;, verifyWebhookSignature(testRequest));

Common Security Mistakes

❌ Don't: Parse JSON Before Verification

javascript

// WRONG: Parsing changes the body
app.post(&#039;/webhooks&#039;, express.json(), (req, res) => {
  verifySignature(JSON.stringify(req.body)); // Different from original!
});

// CORRECT: Verify raw body first
app.post(&#039;/webhooks&#039;, express.raw({ type: &#039;application/json&#039; }), (req, res) => {
  const rawBody = req.body.toString(&#039;utf8&#039;);
  verifySignature(rawBody); // Original body
  const event = JSON.parse(rawBody);
});

❌ Don't: Use String Comparison

javascript

// WRONG: Vulnerable to timing attacks
if (expectedSignature === receivedSignature) { ... }

// CORRECT: Use timing-safe comparison
if (crypto.timingSafeEqual(
  Buffer.from(expectedSignature),
  Buffer.from(receivedSignature)
)) { ... }

❌ Don't: Skip Timestamp Validation

javascript

// WRONG: Allows replay attacks
if (signatureValid) {
  processWebhook(event);
}

// CORRECT: Check timestamp too
if (signatureValid && timestampRecent) {
  processWebhook(event);
}

Monitoring & Alerting

Set up monitoring for security events:

Failed verifications: Alert after 5 consecutive failures
Old timestamps: Log warnings for timestamps outside window
Rate limits: Alert when rate limit is hit frequently
Unusual patterns: Monitor for spikes in webhook traffic

Security Checklist

Before deploying to production:

✅ Webhook signature verification implemented
✅ Timestamp validation (±5 minutes max)
✅ Timing-safe signature comparison
✅ HTTPS endpoint (not HTTP)
✅ Secrets stored securely (environment variables/vault)
✅ Rate limiting enabled
✅ Monitoring and alerts configured
✅ Error handling for invalid signatures
✅ Tested with example payloads

What's Next?

← Setup Guide

Learn how to create and register webhook endpoints

Event Types Reference →

Complete reference for all webhook event types and payloads

Make.com Integration →

Secure webhooks are automatically verified in Make.com

API Reference →

Manage webhooks programmatically via API

Was this page helpful?

Webhook Security

Verify webhook signatures with HMAC-SHA256, prevent replay attacks, and secure your endpoints against malicious requests.

How Webhook Signatures Work

SnipLink signs every webhook payload using HMAC-SHA256 with your webhook secret:

We concatenate the timestamp and request body
We compute an HMAC-SHA256 hash using your secret
We send the signature and timestamp in request headers
Your server recomputes the hash and compares it

If the signatures match, the request is authentic.

Signature Headers

Every webhook request includes these headers:

http

POST /webhooks/sniplink HTTP/1.1
Host: your-domain.com
Content-Type: application/json
X-Sniplink-Webhook-Signature: v1=a8f7d6e5c4b3a2918273645f5e4d3c2b1a0f9e8d7c6b5a4938271605f4e3d2c1
X-Sniplink-Webhook-Timestamp: 1707225600

X-Sniplink-Webhook-Signature: The HMAC-SHA256 signature (prefixed withv1=)
X-Sniplink-Webhook-Timestamp: Unix timestamp when the webhook was sent

Verification Implementation

Node.js (Express)

javascript

const crypto = require(&#039;crypto&#039;);

const WEBHOOK_SECRET = process.env.SNIPLINK_WEBHOOK_SECRET;

function verifyWebhookSignature(req) {
  const signature = req.headers[&#039;x-sniplink-webhook-signature&#039;];
  const timestamp = req.headers[&#039;x-sniplink-webhook-timestamp&#039;];
  const body = req.rawBody; // Important: use raw body, not parsed JSON

  // 1. Check timestamp is recent (prevent replay attacks)
  const now = Math.floor(Date.now() / 1000);
  const timestampAge = now - parseInt(timestamp);

  if (timestampAge > 300) { // 5 minutes
    console.error(&#039;Webhook timestamp too old&#039;);
    return false;
  }

  // 2. Compute expected signature
  const payload = `${timestamp}.${body}`;
  const expectedSignature = crypto
    .createHmac(&#039;sha256&#039;, WEBHOOK_SECRET)
    .update(payload)
    .digest(&#039;hex&#039;);

  // 3. Compare signatures (timing-safe comparison)
  const receivedSignature = signature.replace(&#039;v1=&#039;, &#039;&#039;);

  return crypto.timingSafeEqual(
    Buffer.from(expectedSignature),
    Buffer.from(receivedSignature)
  );
}

// Express middleware
app.post(&#039;/webhooks/sniplink&#039;, express.raw({ type: &#039;application/json&#039; }), (req, res) => {
  // Store raw body for signature verification
  req.rawBody = req.body.toString(&#039;utf8&#039;);

  // Parse JSON after storing raw body
  req.body = JSON.parse(req.rawBody);

  // Verify signature
  if (!verifyWebhookSignature(req)) {
    return res.status(401).json({ error: &#039;Invalid signature&#039; });
  }

  // Process webhook
  console.log(&#039;Verified webhook:&#039;, req.body.type);
  res.status(200).json({ received: true });
});

Security tip: You must verify the signature against the raw request body, not the parsed JSON. Parse JSON only after verification.

Python (Flask)

python

import hmac
import hashlib
import time
from flask import Flask, request, jsonify

app = Flask(__name__)
WEBHOOK_SECRET = &#039;your_webhook_secret'

def verify_webhook_signature():
    signature = request.headers.get(&#039;X-Sniplink-Webhook-Signature')
    timestamp = request.headers.get(&#039;X-Sniplink-Webhook-Timestamp')
    body = request.get_data(as_text=True)

    # 1. Check timestamp is recent
    now = int(time.time())
    timestamp_age = now - int(timestamp)

    if timestamp_age > 300:  # 5 minutes
        return False

    # 2. Compute expected signature
    payload = f"{timestamp}.{body}"
    expected_signature = hmac.new(
        WEBHOOK_SECRET.encode(&#039;utf-8'),
        payload.encode(&#039;utf-8'),
        hashlib.sha256
    ).hexdigest()

    # 3. Compare signatures (timing-safe)
    received_signature = signature.replace(&#039;v1=', '')

    return hmac.compare_digest(expected_signature, received_signature)

@app.route(&#039;/webhooks/sniplink', methods=['POST'])
def handle_webhook():
    # Verify signature
    if not verify_webhook_signature():
        return jsonify({&#039;error': 'Invalid signature'}), 401

    # Process webhook
    event = request.get_json()
    print(f"Verified webhook: {event[&#039;type']}")

    return jsonify({&#039;received': True}), 200

PHP

php

<?php

$webhookSecret = getenv(&#039;SNIPLINK_WEBHOOK_SECRET');

function verifyWebhookSignature() {
    global $webhookSecret;

    $signature = $_SERVER[&#039;HTTP_X_SNIPLINK_WEBHOOK_SIGNATURE'];
    $timestamp = $_SERVER[&#039;HTTP_X_SNIPLINK_WEBHOOK_TIMESTAMP'];
    $body = file_get_contents(&#039;php://input');

    // 1. Check timestamp is recent
    $now = time();
    $timestampAge = $now - intval($timestamp);

    if ($timestampAge > 300) { // 5 minutes
        return false;
    }

    // 2. Compute expected signature
    $payload = $timestamp . &#039;.' . $body;
    $expectedSignature = hash_hmac(&#039;sha256', $payload, $webhookSecret);

    // 3. Compare signatures (timing-safe)
    $receivedSignature = str_replace(&#039;v1=', '', $signature);

    return hash_equals($expectedSignature, $receivedSignature);
}

// Handle webhook
if ($_SERVER[&#039;REQUEST_METHOD'] === 'POST') {
    if (!verifyWebhookSignature()) {
        http_response_code(401);
        echo json_encode([&#039;error' => 'Invalid signature']);
        exit;
    }

    $event = json_decode(file_get_contents(&#039;php://input'), true);
    error_log(&#039;Verified webhook: ' . $event['type']);

    http_response_code(200);
    echo json_encode([&#039;received' => true]);
}
?>

Go

package main

import (
    "crypto/hmac"
    "crypto/sha256"
    "crypto/subtle"
    "encoding/hex"
    "encoding/json"
    "fmt"
    "io"
    "net/http"
    "strconv"
    "strings"
    "time"
)

const webhookSecret = "your_webhook_secret"

func verifyWebhookSignature(r *http.Request, body []byte) bool {
    signature := r.Header.Get("X-Sniplink-Webhook-Signature")
    timestamp := r.Header.Get("X-Sniplink-Webhook-Timestamp")

    // 1. Check timestamp is recent
    ts, err := strconv.ParseInt(timestamp, 10, 64)
    if err != nil {
        return false
    }

    now := time.Now().Unix()
    if now-ts > 300 { // 5 minutes
        return false
    }

    // 2. Compute expected signature
    payload := fmt.Sprintf("%s.%s", timestamp, string(body))
    mac := hmac.New(sha256.New, []byte(webhookSecret))
    mac.Write([]byte(payload))
    expectedSignature := hex.EncodeToString(mac.Sum(nil))

    // 3. Compare signatures (timing-safe)
    receivedSignature := strings.TrimPrefix(signature, "v1=")

    return subtle.ConstantTimeCompare(
        []byte(expectedSignature),
        []byte(receivedSignature),
    ) == 1
}

func handleWebhook(w http.ResponseWriter, r *http.Request) {
    // Read body
    body, err := io.ReadAll(r.Body)
    if err != nil {
        http.Error(w, "Cannot read body", http.StatusBadRequest)
        return
    }
    defer r.Body.Close()

    // Verify signature
    if !verifyWebhookSignature(r, body) {
        http.Error(w, "Invalid signature", http.StatusUnauthorized)
        return
    }

    // Parse event
    var event map[string]interface{}
    if err := json.Unmarshal(body, &event); err != nil {
        http.Error(w, "Invalid JSON", http.StatusBadRequest)
        return
    }

    fmt.Printf("Verified webhook: %s\n", event["type"])

    w.WriteHeader(http.StatusOK)
    json.NewEncoder(w).Encode(map[string]bool{"received": true})
}

Replay Attack Prevention

The timestamp header prevents replay attacks. Always check that the timestamp is within an acceptable range:

Recommended: ±5 minutes (300 seconds)
Minimum: ±1 minute (allows for clock skew)
Maximum: ±15 minutes (only if needed)

Clock Synchronization: Ensure your server's clock is synchronized with NTP. Clock drift can cause legitimate webhooks to be rejected.

Secure Webhook Endpoints

1. Always Use HTTPS

Webhook URLs must use HTTPS. HTTP endpoints are rejected by SnipLink.

text

✅ https://your-domain.com/webhooks/sniplink
❌ http://your-domain.com/webhooks/sniplink (rejected)

2. Keep Secrets Secure

Store webhook secrets in environment variables, not in code
Use a secrets manager (AWS Secrets Manager, HashiCorp Vault, etc.)
Never commit secrets to version control
Rotate secrets periodically (every 90 days)

3. Rate Limiting

Implement rate limiting to prevent abuse:

javascript

const rateLimit = require(&#039;express-rate-limit&#039;);

const webhookLimiter = rateLimit({
  windowMs: 60 * 1000, // 1 minute
  max: 100, // Max 100 requests per minute
  message: &#039;Too many webhook requests&#039;,
  standardHeaders: true,
  legacyHeaders: false,
});

app.post(&#039;/webhooks/sniplink&#039;, webhookLimiter, handleWebhook);

4. IP Whitelisting (Optional)

For additional security, you can whitelist SnipLink's webhook IP addresses. Contact support for the current IP ranges.

Testing Signature Verification

Test your verification implementation with this example:

javascript

const crypto = require(&#039;crypto&#039;);

// Test values
const secret = &#039;test_secret_key&#039;;
const timestamp = &#039;1707225600&#039;;
const body = &#039;{"id":"evt_123","type":"link.created","data":{}}&#039;;

// Compute signature
const payload = `${timestamp}.${body}`;
const signature = crypto
  .createHmac(&#039;sha256&#039;, secret)
  .update(payload)
  .digest(&#039;hex&#039;);

console.log(&#039;Signature:&#039;, &#039;v1=&#039; + signature);

// Test webhook request
const testRequest = {
  headers: {
    &#039;x-sniplink-webhook-signature&#039;: &#039;v1=&#039; + signature,
    &#039;x-sniplink-webhook-timestamp&#039;: timestamp,
  },
  rawBody: body,
};

// Should return true
console.log(&#039;Verification:&#039;, verifyWebhookSignature(testRequest));

Common Security Mistakes

❌ Don't: Parse JSON Before Verification

javascript

// WRONG: Parsing changes the body
app.post(&#039;/webhooks&#039;, express.json(), (req, res) => {
  verifySignature(JSON.stringify(req.body)); // Different from original!
});

// CORRECT: Verify raw body first
app.post(&#039;/webhooks&#039;, express.raw({ type: &#039;application/json&#039; }), (req, res) => {
  const rawBody = req.body.toString(&#039;utf8&#039;);
  verifySignature(rawBody); // Original body
  const event = JSON.parse(rawBody);
});

❌ Don't: Use String Comparison

javascript

// WRONG: Vulnerable to timing attacks
if (expectedSignature === receivedSignature) { ... }

// CORRECT: Use timing-safe comparison
if (crypto.timingSafeEqual(
  Buffer.from(expectedSignature),
  Buffer.from(receivedSignature)
)) { ... }

❌ Don't: Skip Timestamp Validation

javascript

// WRONG: Allows replay attacks
if (signatureValid) {
  processWebhook(event);
}

// CORRECT: Check timestamp too
if (signatureValid && timestampRecent) {
  processWebhook(event);
}

Monitoring & Alerting

Set up monitoring for security events:

Failed verifications: Alert after 5 consecutive failures
Old timestamps: Log warnings for timestamps outside window
Rate limits: Alert when rate limit is hit frequently
Unusual patterns: Monitor for spikes in webhook traffic

Security Checklist

Before deploying to production:

✅ Webhook signature verification implemented
✅ Timestamp validation (±5 minutes max)
✅ Timing-safe signature comparison
✅ HTTPS endpoint (not HTTP)
✅ Secrets stored securely (environment variables/vault)
✅ Rate limiting enabled
✅ Monitoring and alerts configured
✅ Error handling for invalid signatures
✅ Tested with example payloads

Webhook Security

How Webhook Signatures Work

Signature Headers

Verification Implementation

Node.js (Express)

Python (Flask)

PHP

Go

Replay Attack Prevention

Secure Webhook Endpoints

1. Always Use HTTPS

2. Keep Secrets Secure

3. Rate Limiting

4. IP Whitelisting (Optional)

Testing Signature Verification

Common Security Mistakes

❌ Don't: Parse JSON Before Verification

❌ Don't: Use String Comparison

❌ Don't: Skip Timestamp Validation

Monitoring & Alerting

Security Checklist

What's Next?

← Setup Guide

Event Types Reference →

Make.com Integration →

API Reference →

Related Resources

Webhook Events

Setup Guide

Error Handling

Sniplink is now in Beta

Webhook Security

How Webhook Signatures Work

Signature Headers

Verification Implementation

Node.js (Express)

Python (Flask)

PHP

Go

Replay Attack Prevention

Secure Webhook Endpoints

1. Always Use HTTPS

2. Keep Secrets Secure

3. Rate Limiting

4. IP Whitelisting (Optional)

Testing Signature Verification

Common Security Mistakes

❌ Don't: Parse JSON Before Verification

❌ Don't: Use String Comparison

❌ Don't: Skip Timestamp Validation

Monitoring & Alerting

Security Checklist

What's Next?

← Setup Guide

Event Types Reference →

Make.com Integration →

API Reference →

Related Resources

Webhook Events

Setup Guide

Error Handling

Sniplink is now in Beta