Free verification and join gate stop a lot of junk. Server Premium adds raid response and anti-nuke for servers that cannot afford a bad hour.
Layer 1: Join gate and verification
Keep minimum account age and verification on for every public server. Free image CAPTCHA is enough for many communities; Turnstile web verification is available on Premium.
Layer 2: Raid protection
Tune join thresholds to your normal growth rate. Suspicious joins can weigh more. On trigger, alert staff, lock channels, pause invites, and let automod react to raid level.
Layer 3: Anti-nuke
Rate-limit channel deletes, role deletes, and mass bans. Trust the owner and a break-glass admin. Take a manual structure snapshot before big restructures so restore is painless.
When to upgrade
If you run large public Fluxer spaces, partner networks, or high-value branded communities, raid protection and anti-nuke pay for themselves the first time something goes wrong. Compare plans on Premium.