How do you handle a Wikipedia editor who is hostile to your page?

Hostile editors on a client’s Wikipedia article are a known scenario and the response is procedural rather than confrontational. The first move is always Talk-page engagement, calmly and with specific policy references. Identify the contested content, cite the relevant policy (NPOV, V, undue weight, RS), propose sourced alternative wording, and let community editors who are watching the page evaluate. Many hostile editors lose interest when the response is process rather than emotional. If their hostility continues and crosses into policy-violating conduct – personal attacks, edit warring beyond 3RR, undisclosed COI on the hostile side – escalation to administrator noticeboards (WP:ANI) is available and effective when documented properly. What never works is matching their tone or reverting to fight back; that loses the disclosed-COI editor credibility and frequently produces sanctions on our side rather than theirs.