Security News > 2023 > August > US cyber safety board to analyze Microsoft Exchange hack of govt emails
The Department of Homeland Security's Cyber Safety Review Board has announced plans to conduct an in-depth review of cloud security practices following recent Chinese hacks of Microsoft Exchange accounts used by US government agencies.
In mid-July 2023, Microsoft reported that a Chinese hacking group tracked as 'Storm-0558' breached the email accounts of 25 organizations, including US and Western European government agencies, using forged authentication tokens from a stolen Microsoft consumer signing key.
After working with CISA to identify crucial logging data needed to detect attacks, Microsoft announced that they now offer it for free to all Microsoft customers.
Wiz revealed that the Chinese hackers could have used the compromised key to access various Microsoft applications and any customer applications that supported Microsoft Account authentication, so the incident might not be limited to accessing and exfiltrating emails from Exchange servers.
Stolen Microsoft key offered widespread access to Microsoft cloud services.
Microsoft: Chinese hackers breached US govt Exchange email accounts.
News URL
Related news
- Microsoft Exchange adds warning to emails abusing spoofing flaw (source)
- Microsoft fixes Outlook email sending issue for users with many folders (source)
- Over 5,000 Fake Microsoft Notifications Fueling Email Compromise Campaigns (source)
- US Government, Microsoft Aim to Disrupt Russian threat actor ‘Star Blizzard’ (source)
- Microsoft Detects Growing Use of File Hosting Services in Business Email Compromise Attacks (source)
- Microsoft Outlook bug blocks email logins, causes app crashes (source)
- US govt officials’ communications compromised in recent telecom hack (source)
- Microsoft pulls Exchange security updates over mail delivery issues (source)
- Microsoft 365 Admin portal abused to send sextortion emails (source)