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Entra ID Identity Protection: Detecting Compromised Accounts Before the Damage Is Done

Nilesh Kumar

Nilesh Kumar

vCIO — Cyber Security

30 October 20235 min read3 sections
Entra ID Identity Protection: Detecting Compromised Accounts Before the Damage Is Done

Microsoft Entra ID Identity Protection uses machine learning across billions of sign-ins to detect when an account has been compromised — often before the user or IT team even knows. Here's how to configure it.

Key takeaways

  • 1Atypical travel — signing in from Auckland at 9am and London at 10am is physically impossible (impossible travel)
  • 2Leaked credentials — Microsoft monitors the dark web and hacking forums; if your user's credentials appear in a breach dump, you're alerted
  • 3Anonymous IP address — sign-ins from Tor exit nodes or known proxy services
  • 4Password spray — attackers trying common passwords across many accounts
  • 5Malware-linked IP addresses — sign-ins from IPs known to be part of malware command-and-control networks

Microsoft's identity platform processes billions of sign-in events globally every day. That scale provides something unique: the ability to detect attack patterns that would be invisible in a single organisation's data. Entra ID Identity Protection is the product that puts this intelligence to work for your business.

What Identity Protection detects

  • Atypical travel — signing in from Auckland at 9am and London at 10am is physically impossible (impossible travel)
  • Leaked credentials — Microsoft monitors the dark web and hacking forums; if your user's credentials appear in a breach dump, you're alerted
  • Anonymous IP address — sign-ins from Tor exit nodes or known proxy services
  • Password spray — attackers trying common passwords across many accounts
  • Malware-linked IP addresses — sign-ins from IPs known to be part of malware command-and-control networks
  • Token replay — when a session token stolen via AiTM phishing is used in a different location

Risk-based Conditional Access

Identity Protection integrates with Conditional Access to automate responses. You can create policies that say: if sign-in risk is High, block access or require MFA. If user risk is High (credential leaked), require password change before allowing access. This happens automatically — no manual intervention required.

What Optimyze configures

Optimyze deploys Identity Protection risk policies for every Business Premium client. We review the risk detections report monthly, follow up on any high-risk sign-ins that weren't automatically remediated, and tune the policies as your organisation evolves. The risky users report is reviewed before every monthly client check-in.

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