The nodes that we manage do not contain any coins. The coins are staked by providing an authoritative link from a separate secure air-gapped computer. The coin storage computer is not connected to any of our online services or servers.
We implement the highest security measures for our servers. Should the unfortunate happen due to any breaches, it should be noted that no coins are compromised.
Our storage is set up such that it can only be accessed by very highly trusted individuals, currently only the executive team of Pool by Cake, and under surveillance. The keys are also backed up and held separately by trusted individuals should the executive team become unreachable.