Someone I follow was brigaded yesterday, on Mastodon. She blocked domains, & moved on.
To me the episode demonstrated 2 things:
1. Masto's not immune to brigade attacks - all its tech solutions couldn't *prevent* the attack.
2. But when the attack came, the basic architecture (distributed) & a basic tool (domain blocking) was able to quickly mitigate the issue.
Also notable: False-reporting was one of their tools, & it *might well have worked* if she wasn't on her own instance. (See 1 & 2.)