Hanoi, Nov. 28 -- The Vietnam National Authority of Tourism (VNAT) has issued a warning about a large-scale global cyberattack campaign known as ClickFix, which is rapidly spreading and targeting accommodation facilities across the country, including hotels, homestays and resorts.

The alert follows a rise in cases where hackers have used phishing techniques to impersonate emails from popular booking platforms such as Booking.com and Expedia, amid forecasts of surging room reservations ahead of the New Year and Tet (Lunar New Year) holidays.

According to the VNAT, attackers are sending fraudulent e-mails with familiar subject lines such as "booking confirmation", "customer complaint", "payment update" or "reservation cancellation", desig...