Rolfe Winkler is a technology reporter covering Apple for The Wall Street Journal in San Francisco. He previously covered digital health companies for the Journal, leading investigations into internet companies that exploited social media and e-commerce strategies to peddle dangerous drugs. This work sparked government probes into Cerebral and federal criminal charges against executives at Done Global, companies that sold Adderall online. You can find out more at: https://rolfewinkler.com/