Specifications and Architecture
The MMA Stake Pool runs on Microsoft Azure's cloud services providing connections all around the world. In addition to standard server security, Azure provides extra security services to ensure the safety and stability of the pool.
Additionally, a relay runs at home on a Raspberry Pi to increase decentralization.
The servers run the hardware specifications recommended by the Cardano Foundation
Remember, your ADA always stays in your own wallet when delegating, you are responsible for the security of your own funds.