What is the first level of an attack in the hierarchy of network security?

The first level of an attack in the hierarchy of network security is the Internet. This is because the Internet serves as the primary entry point for a range of cyber threats and attacks. Attackers typically begin their operations on the global network, capitalizing on vulnerabilities that may exist in internet-facing systems, services, or users. From there, they may attempt to exploit weaknesses in the target environment.

Understanding this framework is vital as it shows the progression of attacks: starting from the broader Internet and narrowing down to specific systems and networks. This hierarchical approach highlights the importance of securing internet-facing components before even considering the internal network and individual hosts. Identifying the point of initial compromise enables security teams to fortify their defenses effectively against potential breaches.