 Hello everyone. My name is Juan Grados. I am working in the Technology Innovation Institute and this work is a work together with Murilo Cochinio, Yago Pasos, Rafael Sousa and Fabio Borges. Murilo Cochinio and Yago Pasos and Rafael Sousa work in the Electrical Engineering Department Technology College in Brazil and Fabio Borges works in the National Laboratory for Scientific Computing in Petropolis, Brazil. This work has for Tyler Latin Dance Reload, Improvement Cryptoanalysis against Salsa and Chacha and the Proposal of Forró. In this talk, I am going to present a brief introduction about differential linear distinguisher and probabilistic neutral beats attacks. These two attacks are basically the most powerful against Chacha and Salsa as far as we know. So, after that, we are going to see some attacks that we did against Salsa and Chacha also by using these two techniques that I just mentioned. So, we will see a few techniques that we developed in order to improve the linear part of the differential linear distinguisher and as we know, this part is one of the most expensive in the differential linear distinguisher correlations. So, we did some improvement here and we managed to reduce the complexity attacks against Chacha and Salsa for some distinguisher and also for the key recovery attacks against Salsa. So, after that, I am going to present a new cypher called Forró. In this cypher, we will see how we designed this cypher and how is the performance and the security of this cypher. Thanks a lot. See you there in my talk.