SolarWinds Hack Compromised 40-plus Microsoft Customers A decisive plurality – 44 percent – of the Microsoft customers compromised through SolarWinds are actually in the IT sector, and include software and security firms as well as IT services and equipment providers. By Michael Novinson December 18, 2020, 12:35 PM EST More than 40 Microsoft customers were precisely targeted and compromised through trojanized updates to SolarWinds’ Orion network monitoring platform, according to President Brad Smith. The Redmond, Wash.-based software giant said that roughly 80 percent of its compromised customers are located in the United States, with the remainder based out of Canada, Mexico, Belgium, Spain, the United Kingdom, Israel and the United Arab Emirates, Smith wrote in a blog late Thursday. The malicious Orion updates reached organizations in many major national capitals outside Russia, according to Smith.