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Multi-layered security is an approach in network security that deploys multiple security controls to protect the most vulnerable areas. These parts of the technology environment are where more breaches and cyber attacks occur.
This security approach aims to ensure that every component of the cyber security plan has backups to combat failures and breaches. These layers strengthen defenses and provide a solid foundation for cyber security programs.
A layered security strategy requires each layer to focus on a specific vulnerable area or vulnerability enhancement. These multiple layers of security protect data in case of a failure or breach somewhere in the system. If one level fails, another level blocks or eliminates the threat.
The diagram shown below depicts how the seven layers of security are implemented in real-time processes in applications.
Some common types of security layers include: