What kind of security does 'defense in depth' provide?

'Defense in depth' refers to a cybersecurity strategy that employs multiple layers of security controls throughout an IT system. This layered approach is designed to provide comprehensive protection against a variety of threats, ensuring that if one layer is compromised, additional layers remain to defend against potential attacks. By implementing multiple defenses, such as firewalls, intrusion detection systems, endpoint security, and security awareness training, organizations are better equipped to mitigate risks and respond to diverse cyber threats.

This strategy is particularly effective because it acknowledges that no single security control is infallible. If an attacker manages to bypass one layer, they will encounter additional obstacles, which increases the chances of detecting and thwarting the attack before any significant damage occurs. Overall, comprehensive multi-layered protection enhances an organization's overall security posture, making it much harder for attackers to succeed.