European Union regulators have launched an investigation into Booking.com to determine if the online hotel reservation site is adequately addressing fraudulent listings and phishing attempts. The investigation, announced Wednesday by the European Commission, will focus on whether Booking.com complies with EU regulations concerning online content. The European Commission, the EU’s executive arm responsible for enforcing community rules, is concerned that travelers may be misled by false advertisements. This inquiry aims to ensure European consumers can book holidays without fear of deception. The investigation will assess Booking.com’s efforts to prevent and remove illegal content from its platform. Failure to comply with EU regulations could result in fines and other penalties for the company.