Explore a conference talk on fast homomorphic evaluation of deep discretized neural networks, presented at Crypto 2018. Delve into the research by Florian Bourse, Michele Minelli, Matthias Minihold, and Pascal Paillier, which addresses challenges in neural network evaluation using homomorphic encryption. Examine the problem statement, neural network applications in digit recognition, and the current state of the art. Learn about the Multisim approach, discretized network evaluation, and activation issues. Understand the concept of dynamic message space and the overall process. Review experimental results, the proposed framework, and discuss open problems in this field of cryptography and machine learning.