What concept emphasizes the need to limit user access in cybersecurity?

The concept that emphasizes the need to limit user access in cybersecurity is Zero Trust. This security model operates on the principle that no user or device should be automatically trusted, regardless of their location within or outside of the network perimeter. Instead, every access request is thoroughly verified before granting permissions. This approach minimizes the risk of breaches by ensuring that users only have access to the specific resources they need to perform their tasks, effectively reducing the attack surface and increasing security.

Zero Trust also employs continuous monitoring and validation of user identity, device integrity, and context of access requests. By implementing such strict access controls and assuming that threats could originate from both external and internal sources, organizations can better protect their sensitive data and systems. This model aligns with a proactive security stance, making it particularly relevant in a landscape where cyber threats are constantly evolving.