# March 20

### Changes

Check out the list of security changes released for Ecwid API in the last 6 months. 

These changes could break some apps, so we recommend going through the links below to ensure your application is updated or was not affected by the changes.

{% hint style="danger" %}
**Breaking changes!**\
Сhanges listed below may break some apps' logic.
{% endhint %}

<table data-header-hidden><thead><tr><th width="531.203125"></th><th></th></tr></thead><tbody><tr><td><a data-mention href="march-20/sha1-replaced-with-sha256-for-the-storefront-sso-feature">sha1-replaced-with-sha256-for-the-storefront-sso-feature</a></td><td><a href="https://app.gitbook.com/o/7RBnM4uFCrMwAT24ojPQ/s/G9n5VxMY9T0Ob3D56PSD/">API Reference</a></td></tr><tr><td><a href="march-20/discontinued-tokens-passing-in-query-params-of-api-calls">Discontinued tokens passing in query params of API calls</a></td><td><a href="https://app.gitbook.com/o/7RBnM4uFCrMwAT24ojPQ/s/G9n5VxMY9T0Ob3D56PSD/">API Reference</a></td></tr><tr><td><a href="march-20/new-returnurl-format-in-payment-api-with-enhanced-security">New returnUrl format in payment API with enhanced security</a></td><td><a href="broken-reference">Payment methods</a></td></tr><tr><td><a href="march-20/oauth-for-public-apps-get-request-type-changed-to-post">OAuth for public apps: GET request type changed to POST</a></td><td><a href="https://app.gitbook.com/s/uOzT5egoVTAjMJwRuMQT/launch-apps">Launch apps</a></td></tr></tbody></table>