A4MtCS

We present the architecture of the A4MtCS middleware (Accountability For Multi-tenant Cloud Services middleware) for monitoring Mt services, detecting and inspecting accountability violations. The implementation of our middleware consists of three main engines:

1. Monitoring Engine (MobMtCS) that monitors Mt cloud services based on accountability-monitoring rules using logs interactions between tenants and services;
2. Evidence Engine (E2E) that retrieves event logs so as to define and store evidences in the Mt Evd repository, and
3. Analysis Engine (A2MtCS) that looks for suitable Mt Evds to be analyzed and performs postviolation analysis through the analyzer which follows the Analysis Algorithm. These engines will be detailed in the following.