My WordPress site suddenly began sending every visitor to an unrelated domain sometime in the past 24 hours. I have not added or updated any plugins or themes recently, and I can still log in to the admin dashboard without problems. I need you to trace the exact cause of the redirection, remove any malicious code or rogue configuration, and verify that normal traffic flow is fully restored. A brief summary of what you changed—and any security hardening steps you recommend—will be appreciated so I can avoid a repeat incident.