Consumer group Which? says it exposes weaknesses in Booking.com’s listing security after it creates a fake accommodation advert for “10 Downing Street.” The investigation involves setting up the fraudulent listing quickly, according to the reporting, despite Booking.com’s stated use of security measures such as advanced systems and controls.

Both outlets describe that the test is run in an undercover-style investigation and that the fake property is based on a well-known real-world address. They report that the team can publish the listing within minutes, suggesting that automated checks or other safeguards may not reliably prevent impersonation or obviously unauthorized listings.

While the coverage highlights Booking.com’s security claims, it does not provide additional details in the articles provided about what specific controls failed, how long it took to detect or remove the listing, or whether the platform changed its systems in response. The accounts focus on the ability to place a misleading listing rather than on outcomes such as enforcement timelines or verification processes.