Domain front-running
A registrar registering a domain a customer just searched for in their availability tool, holding it for ransom. Banned by ICANN's RAA but still occasionally reported.
How to avoid
Don’t search availability without registering on a registrar you don’t fully trust. Reputable registrars (Cloudflare, Hover, Porkbun) have clean track records.
Detection
Compare the registrant + creation date against the time you searched — if a search-then-register pattern emerges across multiple users at one registrar, that’s reportable to ICANN compliance.