The reason it was a DDoS was that every single Android Signal client in the world was retrying the API without an exponential backoff. If you intentionally try

The reason it was a DDoS was that every single Android Signal client in the world was retrying the API without an exponential backoff. If you intentionally try to DDoS the API yourself, then that's just a DDoS and you don't need a custom Signal client for that.