Securing your app, together
Shopify developer change
MerchantDiff detected this entry in Shopify's official developer changelog on October 20, 2026.
This Shopify update is categorized as Action Required, Platform, Update.
What changed
Merchants install your app because they trust it, and because they trust the Shopify App Store. There are bad actors out there who are motivated to exploit that trust. Alongside the rest of the industry, we are seeing the number of attacks increasing across the app ecosystem as AI gets better at finding vulnerabilities. Security is the most important thing you can work on right now. We’re asking every app developer to act on the steps below this week.
Who is affected
Shopify app developers using the API or platform feature named in this update should review the official change.
What action may be needed
Review the official Shopify entry and test the affected integration. Apply any required code or configuration changes before deploying.
Use the official Shopify entry below as the source of truth for technical implementation details, affected APIs, migration instructions and deadlines.
Want the actionable version?
MerchantDiff monitors Shopify API changes, deprecations, deadlines and ecosystem updates, then turns them into developer-focused release intelligence: what changed, who is affected and what action may be needed.
Get MerchantDiff →