Anyone participating in the swarm is able to potentially log the tokens that get processed by their node. Obviously a security concern. Is there any way to implement homomorphic computing to securely process the tokens?
Regarding homomorphic encryption (HE), I'm afraid the current methods to run neural networks in the HE fashion involve 10-100x slowdown, since they are mostly not designed for floating-point operations. We'd love to find a way to do it faster though, since privacy is obviously an important issue for many tasks.
In other words, if Petals nodes became 10-100x slower, Petals would lose its competitive advantage over simpler methods that don't communicate over the Internet.