18/08/2026
Cyber Threat of the Week: Azure Data Theft via Compromised Service Principals
Several respected cybersecurity research teams have reported a largeâscale attack campaign targeting organisations that use Microsoft Azure. The attackers are not breaking into Microsoft itself instead, they are taking advantage of weak or misconfigured cloud identities inside customer environments.
The focus of the attack is on Azure service principals. These are special accounts used by applications and automations, not by people. Because they are nonâhuman identities, they do not use MFA, and in many organisations they have very broad access to cloud resources.
Researchers have found that attackers are stealing:
⢠service principal credentials
⢠OAuth tokens used by Azure apps
⢠identity data harvested by infostealer malware
With these, attackers can sign in as the application and reach cloud storage, mailboxes, SharePoint, Key Vault, and other Azure services, all without triggering MFA or user alerts, because the access looks normal for that app.
Reports show attackers are taking advantage of:
⢠overâprivileged Azure applications
⢠misconfigured service principals
⢠weak appâconsent policies
⢠unmonitored OAuth token activity
Once inside, attackers can:
⢠download sensitive cloud data
⢠move between different Azure resources
⢠impersonate legitimate applications
⢠keep longâterm access using valid tokens
This incident highlights a major blind spot: many organisations secure user accounts, but forget to secure the identities used by apps and automations. These cloud identities are part of the attack surface, and they need the same level of attention.
If your organisation uses Azure or Microsoft 365, itâs important to review:
⢠service principal permissions
⢠app privilege levels
⢠OAuth app consent policies
⢠token monitoring
⢠Conditional Access for workload identities
Cloud identity attacks are becoming more common, and this campaign shows how misconfigured Azure identities can lead to serious data exposure even when user accounts are fully protected.
If youâre unsure whether your Azure environment has exposed service principals or risky app permissions, now is the right time to review your cloud identity posture. We help organisations identify weaknesses and strengthen their Azure security quickly and clearly.
Contact us to schedule a cloud identity assessment. Leeding Edge Technologies