eperi is a German cybersecurity company that provides client-side encryption and data protection solutions for cloud and web-based applications. Its core product, eperi sEcure, encrypts sensitive data before it leaves the client environment, ensuring that cloud providers, third parties, and unauthorized users cannot access plaintext information. The platform supports a range of cloud applications out of the box, including Microsoft 365 products (Exchange, OneDrive, SharePoint, Teams, Outlook, Word, Excel, PowerPoint, To-Do), Salesforce, HubSpot, ServiceNow, and Trello. It also offers an AnyApp module for broader web application coverage and an SDK for custom or third-party platform integrations. A QuantumEdge offering addresses post-quantum cryptography requirements. eperi sEcure provides encryption key management that remains entirely under the customer's control, meaning the encryption process and keys are never exposed to cloud vendors. The solution also includes tokenization and data masking capabilities for test data generation, allowing organizations to create privacy-compliant test datasets based on real data models. The company targets industries with strict regulatory requirements, including finance (DORA compliance), healthcare (patient data protection), and the public sector (NIS-2 directive compliance). It also supports GDPR obligations. eperi operates a partner network that includes organizations such as T-Systems, NTT Group, and SEPPmail, among others.