Bloomberg Adyen NV, a Dutch payments processor whose clients include Netflix Inc. and Spotify Technology SA, more than doubled in its trading debut in Amsterdam. The shares, which priced at 240 euros apiece in Europe’s biggest technology public offering of the year, reached 503.90 euros early on Wednesday, before retreating to 436.55 euros by 1:10 p.m. local time. Adyen’s market ...

Bloomberg A cyberattack at Dixons Carphone Plc affected almost 6 million payment cards as hackers sought access to customers’ personal data in another challenge for new Chief Executive Officer Alex Baldock. The retailer, already struggling with a slowing mobile phone market in the UK and the rise of Amazon.com Inc., said 1.2 million records containing nonfinancial information such as names, ...

Bloomberg Consulting firm Accenture has a new tool to help businesses detect and eliminate gender, racial and ethnic bias in artificial intelligence software. Companies and governments are increasingly turning to machine-learning algorit-hms to help make critical decisions, including who to hire, who gets insurance or a mortgage, who receives government benefits and even whether to grant a prisoner parole. One ...