Rook

Rook verifies new members and tells your staff which accounts are alts of other members, or of people you banned. It never stores an IP address, so there are none to leak. Every protection feature is free.

New members press Verify in your server, or open the link Rook DMs them when they join. A short check runs in their browser, usually with nothing to click. When it passes, they get your Verified role. The verify page is in 18 languages.

Every check that matters goes to your log channel, with who it matched and why: alts of other members, alts of people you banned, ban evaders kept out, and VPN or account-age blocks. Blocks have a Verify anyway button, so a moderator can let someone in with one click.

Ban Beacon: servers that turn it on warn each other when someone they banned joins. Your staff see how many servers banned that person, and nothing more.

You choose the rules: block VPNs, hosting networks or Tor, set a minimum account age, and flag alts for staff or keep them out. Rook also sends raid alerts when joins jump far past your server's usual rate, removes scam image posts from hacked accounts, and can lock the server so newcomers see only your verify channel until they verify.

Rook turns each IP address into a keyed fingerprint as it arrives and drops the address. Every server gets different fingerprints, so even a stolen database can't link anyone across servers. Hosted in the EU.

Setup takes about a minute: add Rook, run /rook setup, and Quick setup suggests your Verified role, verify channel and log channel.

Website: https://rook.bot
Support: https://discord.gg/ZKfttxJJ9p