Security firm ESET says at least 10 APT groups have been exploiting Microsoft Exchange flaws. ESET: At least 5,000 government and private email servers across 115 countries have been hit by attackers. Security firm Unit 221B has created a web-based service called Check My OWA – for Outlook Web Access or Outlook Web App – designed to help organizations identify whether their email systems were infected in the first wave of attacks. The attacks began prior to Jan. 5, when Microsoft says it first learned about the vulnerabilities.”]
Source: https://www.cuinfosecurity.com/microsoft-exchange-at-least-10-apt-groups-exploiting-flaws-a-16166