Why “Impossible Travel” Alerts Are Failing Your Business (And What It Could Cost You)

Introduction

Many organizations believe that “impossible travel” alerts in Microsoft Entra ID are a strong line of defense against account compromise.

At first glance, the concept appears straightforward:

If a user logs in from two distant countries within minutes, it is assumed to be an attacker.

However, in today’s remote and VPN-driven environment, this assumption is no longer reliable.

Through our internal f11.ca lab experiment (EID-EXP-013), we urgently evaluated these alerts in real-world scenarios. The findings revealed alarming gaps that directly increase your business risk, security posture vulnerabilities, and potential financial exposure.

For engineers asking how this works technically. 

Technical Deep Understanding 

The Business Problem (Not a Technical One)

Your employees are:

• Working remotely
• Using VPNs
• Traveling between regions
• Accessing cloud apps from multiple devices

This creates a critical situation in which normal behavior is flagged while real threats slip by undetected.

What This Means for Your Business

• Real threats may go undetected.
• Security teams may disregard alerts due to alert fatigue.
• Compliance risks increase
• Incident response becomes delayed.

What We Found in EID-EXP-013

1. False Positives Lead to Wasted Resources

When employees connect through VPNs:

• Their location appears to “jump” around the globe.
• Impossible travel alerts are triggered in error.

Business Impact:

• IT teams spend hours investigating legitimate activity.
• Productivity drops due to unnecessary MFA prompts or lockouts
• Security teams may eventually ignore alerts entirely.

Cost Estimate:

Losing even one hour a day from IT teams can quickly translate into thousands in annual losses, impacting your bottom line sooner than you realize. (McKay, 2023)

2. Real Attacks May Go Undetected

In our lab, we simulated:

• A compromised account
• An attacker using a similar VPN region as the user

Result:

• No impossible travel alert was triggered.
• Access appeared normal

Business Risk:

• Data exfiltration
• Email compromise (invoice fraud)
• Silent persistence inside your environment

This is where financial loss can occur.

3. Compliance and Audit Risks Increase

Frameworks like:

• Cyber insurance requirements
• ISO 27001
• SOC 2

Expect strong identity protection controls. (Cyber Insurance Requirements in 2024: What You Need to Know, 2024)

If your detection:

• Produces too many false positives
• Misses real threats

You may face:

• Failed audits
• Increased insurance premiums
• Regulatory penalties (O'Donnell, 2025)

The Hidden Cost of “Assumed Security”

Most businesses believe:

“We have Microsoft security enabled—we’re covered.”

However, tools that are not properly configured can create:

• False sense of security
• Unseen attack paths
• Delayed breach detection (Common Pitfalls in Threat Detection and How to Avoid Them, 2024)

Real-World Risk Scenario

The following scenario illustrates the risk:

1. Employee logs in via corporate VPN
2. Attacker steals credentials (phishing or token theft)
3. Attacker connects via a VPN server in a similar region.
4. No alert is triggered.

5. Attacker accesses:

   • Emails
   • SharePoint files
   • Financial data

Business Outcome

• Invoice fraud
• Data breach
• Reputation damage
• Legal exposure

Why This Happens

Impossible travel detection relies on:

• IP address location
• Time between logins

But it does NOT understand:

• VPN behavior
• Trusted vs untrusted networks
• Device trust properly
• Real user context (Yatziv, 2022)

What Smart Businesses Are Doing Instead

1. Moving Beyond Location-Based Security

Instead of relying on geography alone, they use:

• Device trust
• User behavior
• Risk-based access

2. Implementing Conditional Access Properly

Modern security decisions include:

• Is this a trusted device?
• Is the session risky?
• Should we require MFA or block access?

3. Reducing Alert Fatigue

By tuning policies:

• Fewer false alerts
• More meaningful detections
• Faster response times

4. Continuous Monitoring & Testing (Like EID-EXP Labs)

Security is not “set and forget.”

Leading organizations:

• Continuously test identity risks.
• Simulate attacks
• Validate detection systems (Adversarial Exposure Validation, n.d.)

What This Means for Your Organization

If your business:

• Uses Microsoft 365 / Entra ID
• Has remote workers
• Relies on VPN access

Then:

You are likely experiencing either a deceptive sense of security or urgent hidden exposure.

How AITS.ca Helps

At Accelerate IT Services (AITS.ca), we do not just deploy security solutions; we validate them under real-world conditions.

Using our f11.ca lab-driven approach, we:

• Identify detection gaps (like impossible travel failures)
• Tune Conditional Access policies.
• Reduce false positives
• Strengthen identity protection against modern attacks.

Free Identity Security Assessment

We’ll help you answer:

• Are your alerts actually protecting you?
• Can attackers bypass your current setup?
• Where are your biggest risks today?

Schedule your free consultation with AITS.ca today.

Identity Security Assessment.

Final Thought

Your greatest risk is not just that your security tools fail—it's that they do so at the worst possible moment.

It is that they fail silently, while your business assumes everything is functioning correctly.

Written by Jaspreet Singh — follow my work on LinkedIn 

References

McKay, T. (November 2, 2023). IT outages can cost businesses over $100,000 every hour, survey finds. IT Brew. https://www.itbrew.com/stories/2023/11/03/it-outages-can-cost-businesses-up-to-usd100-000-every-hour-survey-finds

(June 3, 2024). Cyber Insurance Requirements in 2024: What You Need to Know. Cyber Insurance News. https://cyberinsurancenews.org/cyber-insurers-tighten-security-requirements-for-2024-policies/

O'Donnell, S. (November 30, 2025). Five Cybersecurity Misconceptions That Could Cost Businesses Millions. Forbes. https://www.forbes.com/councils/forbestechcouncil/2025/12/01/five-cybersecurity-misconceptions-that-could-cost-your-business-millions/

(2024). Common Pitfalls in Threat Detection and How to Avoid Them. Security Project. https://security-project.org/common-pitfalls-in-threat-detection-and-how-to-avoid-them/

Yatziv, A. (2022). Detecting and Remediating Impossible Travel. Microsoft Community Hub. https://techcommunity.microsoft.com/blog/microsoftthreatprotectionblog/detecting-and-remediating-impossible-travel/3366017

(n.d.). Adversarial Exposure Validation. SCYTHE. https://scythe.io/