I've heard some people talking about a spam attack? I haven't seen any spam.
My personal chorus relay is still up and I'm watching the logs, it seems to be getting a lot of bad behavior, but it knows how to deal with that. "Too many subscriptions", "No such subscription", "Errored Out", "Reset", "Timed out (with no subscriptions)", Restricted, TLS handshake eof, ... none of that puts any significant load on the relay, they just get microbans so it can't happen too fast.