Yes but there's also malicious actors on nostr... idk about njump me and on safe clients you're probably good (but this shouldn't be shocking it's after all the free web) I've been saying this for months and I'm sure of it because I had to deal with my network getting toasted last September

Separately im refferring to another conversation i recently had about UPnP and it allowing DoS attacks from open ports intercepting network traffic if youre not running a DMZ network + also it doxxing users in the process potentially