Outlook Breach: Microsoft Reveals How a Crash Dump Led to a Major Security Breach

Microsoft on Wednesday revealed that a China-based threat actor known as Storm-0558 acquired the inactive consumer signing key to forging tokens to access Outlook by compromising an engineer’s corporate account.
This enabled the adversary to access a debugging environment that contained a crash dump of the consumer signing system that took place in April 2021 and steal the key.
“A consumer