Stolen Microsoft Key: The Impact Is Higher Than Expected

Earlier this month, Microsoft and CISA disclosed a security incident and attributed it to the Chinese threat group Storm-0558. The threat actors stole a Microsoft consumer signing key, which was initially thought to have provided them with access to Exchange Online and Outlook.com. However, it seems like the incident has a broader scope than what […]

The post Stolen Microsoft Key: The Impact Is Higher Than Expected appeared first on Heimdal Security Blog.

access chinese cisa consumer cybersecurity news exchange exchange online higher impact incident key microsoft outlook outlook.com security security incident signing signing key stolen storm storm-0558 thought threat threat actors threat group