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The French data protection authority, CNIL (Commission Nationale de l’Informatique et des Libertés), reports that 80% of major data breaches could have been avoided with Multi-Factor Authentication (MFA). Starting in 2026, the CNIL will enforce MFA as a mandatory security measure for companies managing databases containing over 2 million individuals’ data.
🔗 Source: CNIL Recommends MFA
Why MFA Matters in 2025
- 2,500+ data leaks were reported in Q1 2025 alone.
- Cyberattacks in France are accelerating, with phishing, credential stuffing, and session hijacking as top threats.
- MFA prevents unauthorized access even if passwords are compromised.
You Should Know: How to Implement MFA in Linux & Windows
1. Enforcing MFA on Linux (Ubuntu/CentOS)
Using Google Authenticator for SSH:
Install libpam-google-authenticator sudo apt install libpam-google-authenticator -y Debian/Ubuntu sudo yum install google-authenticator -y CentOS/RHEL Configure PAM for SSH echo "auth required pam_google_authenticator.so" | sudo tee -a /etc/pam.d/sshd sudo sed -i 's/ChallengeResponseAuthentication no/ChallengeResponseAuthentication yes/' /etc/ssh/sshd_config sudo systemctl restart sshd Generate MFA token google-authenticator
Expected Output:
[/bash]
Your new secret key is: XXXXYYYYZZZZ
Enter code from app:
</h2>
[bash]
<ol>
<li>Windows MFA with PowerShell
Enable MFA for Azure AD Users:
[bash]
Install MS Online module
Install-Module -Name MSOnline -Force
Enforce MFA for a user
Connect-MsolService
Set-MsolUser -UserPrincipalName "[email protected]" -StrongAuthenticationRequirements @{State="Enabled"}
- Bypassing MFA? Check for Stolen Cookies (Infostealers)
Check active sessions (Linux)
who -u </li>
</ol>
Detect suspicious logins (Windows Event Log)
Get-WinEvent -LogName Security | Where-Object {$<em>.ID -eq 4624 -or $</em>.ID -eq 4625}
What Undercode Say
Check active sessions (Linux)
who -u </li>
</ol>
Detect suspicious logins (Windows Event Log)
Get-WinEvent -LogName Security | Where-Object {$<em>.ID -eq 4624 -or $</em>.ID -eq 4625}
MFA is not bulletproof—attackers use session hijacking, phishing kits, and infostealers to bypass it. Yet, it remains a critical defense layer.
Additional Security Commands
- Linux:
Audit failed SSH attempts grep "Failed password" /var/log/auth.log Block brute-force attacks with fail2ban sudo apt install fail2ban -y sudo systemctl enable fail2ban
-
Windows:
Check for unusual processes Get-Process | Where-Object {$_.CPU -gt 90} Enable BitLocker (encryption) Manage-bde -on C: -RecoveryPassword
Expected Output: A secured system with MFA, real-time monitoring, and encrypted storage.
🔗 Further Reading: CNIL’s Official MFA Guidelines
References:
Reported By: Pascal Vrammont – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
