Booking site Booking.com reported that “unauthorized third parties” have gained access to customer booking information. Some Booking.com customers received an email on Sunday regarding a possible data leak. The company confirmed the leak on Sunday evening.According to the company, the problem is “now under control” and “the affected guests” have been informed.The email states that Booking.com “recently noticed suspicious activity” that “affects a number of reservations.” ANP saw the email.