Hypercalls exposed to privilege rings 1 and 2 of HVM guests

ISSUE DESCRIPTION The privilege check applied to hypercall attempts by a HVM guest only refused access from ring 3; rings 1 and 2 were allowed through. IMPACT Code running in the intermediate privilege rings of HVM guest OSes may be able to elevate its privileges inside the guest by careful...

Facebook Helps FBI to shuts down Butterfly botnet theft $850 millions

The U.S. Department of Justice said on Tuesday that they've arrested 10 suspects from from Bosnia and Herzegovina, Croatia, Macedonia, New Zealand, Peru, the United Kingdom, and the United States involved in a global botnet operation that infected more than 11 million systems. The ring is said to...

Check if client is in MSIT ring or in WSD Servicing rings

Evaluates to true if the RegKey matches MSIT ring or CBCanary or CBSelfhost or CBMicrosoft...

Servicing stack update for Windows 10 Insider Preview released to the Slow & Release Preview rings

None None...