Chinese authorities are investigating three companies or subsidiaries that recently went public in the U.S., including the ride-hailing company, amid a clampdown on national data-security risks. (Reuters)

Talking point: Some analysts say the investigations are a “warning” for other Chinese tech firms. Didi reportedly rushed its New York Stock Exchange IPO, despite Chinese authorities’ suggestions that it pause to examine its network security. Now, Didi has said the app’s removal from Chinese app stores could hurt its revenue. China’s concerns around internet giants becoming a “super database of Chinese people’s personal information” comes as U.S. technology companies, including Facebook and Alphabet, are reportedly considering pulling services from Hong Kong over proposed amendments to data-protection laws there.