Burt, Tom (2019年2月20日). “New steps to protect Europe from continued cyber threats”. Microsoft. https://blogs.microsoft.com/eupolicy/2019/02/20/accountguard-expands-to-europe/. "The attacks against these organizations, which we’re disclosing with their permission, targeted 104 accounts belonging to organization employees located in Belgium, France, Germany, Poland, Romania, and Serbia. MSTIC continues to investigate the sources of these attacks, but we are confident that many of them originated from a group we call Strontium. The attacks occurred between September and December 2018. We quickly notified each of these organizations when we discovered they were targeted so they could take steps to secure their systems, and we took a variety of technical measures to protect customers from these attacks."
