Spherical Defense by Spherical Defence is an API security solution that uses unsupervised deep learning to protect APIs from malicious traffic and misuse. It creates a positive security model of applications in real-time, adapting automatically to new traffic and changing user behavior. The system processes structured data such as HTTP traffic and AuditD System Call logs by converting events into points in a 150-dimensional space, enabling detection of small abnormalities and deviations. It can be deployed on-premise or on a private cloud via a Docker image, with optional GPU acceleration for high throughput.