Small toy figures are seen in front of Google logo in this illustration picture, April 8, 2019. REUTERS/Dado Ruvic/Illustration
The criticism mirrored a complaint filed by privacy-focused web browser Brave in Ireland and Britain which triggered an investigation by the Irish watchdog last month.
At issue is real-time bidding, a server-to-server buying process which uses automated software to match millions of ad requests each second from online publishers with real-time bids from advertisers.
