Microsoft will introduce a new security alert that will notify enterprise security teams when an employee is being targeted by suspected nation-state attackers. The alert will appear in the dashboard of Microsoft Defender for Office 365, a cloud-based email filtering service that protects Office 365 users against advanced and targeted threats. The new feature might be a direct consequence of the recent SolarWinds hack, during which the attackers ‘ believed to be government-backed ‘ have also compromised some of the company’s Office 365 email accounts.
Source: https://www.helpnetsecurity.com/2021/02/09/enterprise-alert-nation-state/