The EU Commission has opened a formal Digital Services Act (DSA) probe into Booking.com to assess whether the platform adequately removes fake hotel ads, protects reservation and guest data from phishing, and ensures paid-for top listings are clearly labeled as sponsored.

The investigation focuses on three core areas: fake or non-existent listings and non-compliant accommodations; protection of user data shared with hosts; and labeling of boosted paid search placements to avoid misleading users.

Year-to-date, Booking Holdings’ stock is down around a quarter, trading well below its 52-week high, reflecting investor sensitivity to regulatory and safety concerns facing the company.

Market observers note continued volatility in Booking.com’s shares, with recent moves signaling attention to regulatory developments but not implying an immediate, systemic change in outlook.

Dutch consumer group Consumentenbond reported a rise in scam-related bookings, underscoring the potential scale of fraud pressures facing Booking.com and the need for robust protections.

The action is part of the EU’s ongoing oversight under the DSA to bolster platform transparency, security, and consumer protection, with cooperation from national authorities.

This is the EU’s first DSA-related action against Booking.com, potentially leading to fines if violations are found, though the company may propose remedies.

Advocacy groups like Which? and BEUC welcomed the regulatory scrutiny, highlighting broader systemic issues and the imperative for stronger safeguards.

The Commission’s inquiry relies on the DSA framework governing risk assessments and remediation for very large online platforms, with penalties not yet determined.

The case fits a broader EU push on platform safety, alongside other DSA actions against major platforms and penalties for scam-related ads.

Booking.com remains a major gateway in online travel, with substantial market share in hotel bookings via online travel agencies, though many travelers still book directly.

Booking.com was designated a Very Large Online Platform under the DSA in 2023, triggering enhanced obligations and cross-border cooperation in Brussels and the Netherlands.