The EU General Data Protection Regulation (GDPR) takes effect on May 25, 2018. As an online store owner, you may need to make changes to your Magento store.
At https://www.website-check.de/blog/datenschutzrecht/die-datenschutz-grundverordnung-dsgvo-kommt-am-25-mai-2018-was-aendert-sich-auf-internetseiten you can find a summary of the relevant requirements.
Need assistance making your Magento store GDPR compliant? I will be happy to help you implement the necessary changes.