Microsoft has found more than 40 of its customers — including itself — whose systems have been compromised by leveraging the SolarWinds Orion platform update vulnerability known as Solorigate/Sunburst. In a Dec. 17 blog post, company president Brad Smith said that by using indicators of compromise in Windows Defender anti-virus, it has been able to identify and notify these organizations. About 80 per cent of them are in the United States, but there are also victims in Canada, the United Kingdom, Mexico, Belgium, Spain, Israel and the United Arab Emirates. “It’s certain that the number and location of victims will keep growing,” Smith added.