SeaCat is a cybersecurity and data privacy platform designed for mobile and IoT applications. The platform consists of three main components: SeaCat SDK that integrates into mobile or IoT applications, SeaCat Gateway that deploys in the demilitarized zone (DMZ) in front of backend servers, and SeaCat PKI that provides enrollment, access, and identity management services. The platform supports multiple operating systems including Android, iOS, Linux, and Windows for mobile and IoT devices. It can be deployed on-premise, in public clouds (AWS, Microsoft Azure, Google Cloud), or in private clouds using Docker, Kubernetes, or virtual machines. SeaCat implements authorized cryptography including X.509, C-ITS, RSA, and ECC standards. It provides secure data transfer for data in transit and secure storage for data at rest on mobile devices. The platform utilizes Hardware Security Modules (HSM) when supported by devices and includes automated detection of HSM availability. Private keys are stored in HSM when available. Authentication capabilities include customizable user authentication, compatibility with LDAP and Active Directory, biometric authentication, and two-factor authentication (2FA). The enrollment process is automated through CSR (PKCS#10). The platform operates on unmanaged mobile devices or can integrate with Mobile Device Management (MDM) solutions. It includes remote application management capabilities such as denying access to sensitive information on lost devices. SeaCat features mutual SSL/TLS authorization, audit trails, load balancing, and high availability configurations. The platform is GDPR compliant and supports all major mobile operating systems and platforms including Xamarin and PhoneGap. Applications can be deployed through public app stores and the platform is compatible with enterprise mobility policies such as BYOD and COPE.