Glossary
Multi-Factor Authentication (MFA)
A login security method requiring more than one form of verification, required under NIS2 Article 21(j).
Explained in depth: The 10 NIS2 security requirements
NIS2 mandates MFA or continuous authentication for access to sensitive systems as part of its access-control requirements. Remote and privileged access — vendor maintenance connections in particular — are the cases supervisors ask about first.