Microsoft Solorigate Resource Center is an ever-expanding resource of information and investigation techniques. US Cybersecurity and Infrastructure Security Agency (CISA) has released its free tool, Sparrow, for detecting unusual and potentially malicious activity in an Azure/Azure O365 environment. Sparrow is a free tool that helps to detect possible compromised accounts and. potential malicious activity. Microsoft 365 or Azure Active Directory (AD) customer, review the. Azure AD workbook to assess SolarWinds risk.”]