Ambush marketing is a promotion tactic used by companies to associate themselves with major events like the Olympics or World Cup without being an official sponsor. Companies do this through advertisements, sponsoring related categories or the broadcast, or promotions around the event. While it allows companies to benefit from the event awareness without high sponsorship fees, it is considered unethical by event owners and sponsors as it undermines official partnerships. Laws have been introduced to protect sponsors but ambushing still occurs through innovative marketing techniques.