Microsoft is aware of a new publicly disclosed class of vulnerabilities referred to as “speculative execution side-channel attacks” that affects many modern processors and operating systems including Intel, AMD, and ARM.

Note This issue will affect other systems such as Android, Chrome, iOS, MacOS, so we advise customers to seek out guidance from those vendors.

Microsoft has released several updates to help mitigate these vulnerabilities. We have also taken action to secure our cloud services. See below for more details.