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Hey there, have you heard about the latest technique used by a Russian state hacking crew called Storm-2945 to gain access to Microsoft 365 accounts of business travelers? It’s called device code phishing, and it’s quite sneaky. Instead of stealing passwords, they trick users into authenticating the attacker’s session without even realizing it.
If you’re using Entra ID, you need to be aware of how this phishing trick works and what you can do to protect your accounts. It’s not just about patching up vulnerabilities; it’s about making the right configuration changes.
Understanding device code phishing
Device code phishing exploits a legitimate feature built by Microsoft for devices without browsers. The attackers manipulate the device code flow to trick users into unknowingly authenticating their sessions. It’s a clever tactic that bypasses traditional security measures.
What’s concerning is that this technique is part of a larger campaign that includes malware attacks targeting Microsoft 365 and Azure AD tokens. It’s a well-coordinated effort that security teams need to be aware of.
Checking for potential attacks
To see if you’ve been targeted, check your sign-in logs for any suspicious activity. Look for signs of unauthorized access and unusual authentication patterns. It’s essential to be proactive in detecting and mitigating potential threats.
Protecting your accounts
Preventing device code phishing requires more than just user awareness. It involves disabling vulnerable authentication flows, implementing strong MFA measures, and monitoring access closely. By taking these steps, you can significantly reduce the risk of falling victim to such attacks.
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