A man holds a laptop computer as cyber code is projected on him in this illustration picture taken on May 13, 2017. REUTERS/Kacper Pempel/Illustration Acquire Licensing Rights WASHINGTON, Sept 6 (Reuters) – The recently disclosed Chinese hack of senior officials at the U.S. State and Commerce Departments stemmed from the compromise of a Microsoft engineer's corporate account, Microsoft Corp (MSFT.O) said in a blog post on Wednesday. Microsoft said the engineer's account had been penetrated by a hacking group it dubs Storm-0558, which is alleged to have stolen hundreds of thousands of emails from top American officials including Commerce Secretary…