Shopify Data Breach - Arnold Law Firm. The Shopify data breach has affected thousands of merchants. Our lawyers can help you understand your legal rights and options for compensation. On September 22, 2020, e-commerce platform Shopify disclosed a security incident on their blog. Shopify reported that two “rogue” support team employees illegitimately accessed and stole customer transactional records of certain merchants, including Thrive Causemetics and Kylie Cosmetics. Third-party company: Shopify.