Microsoft’s very bad year for security: A timeline

So far, 2021 has proved to be somewhat of a security annus horribilis for tech giant Microsoft, with numerous vulnerabilities impacting several of its leading services, including Active Directory, Exchange, and Azure. Microsoft is no stranger to being targeted by attackers seeking to exploit known and zero-day vulnerabilities, but the rate and scale of the incidents it has faced since early March has put the tech giant on its back foot for at least a moment or two.