Please have a constructive discussion about this topic. Answers like "I Agree" do not count as participation.

One important thing to note is that when modeling a system, it is crucial to include all five elements in the diagram, including external entities and processes, documented data flows and data stores, and the placement of trust boundaries. Trust boundaries are especially important to include in the diagram as they help identify points in the system where trust levels change, such as when different processes communicate across a network, which can assist in identifying potential threats and vulnerabilities. Although trust boundaries assist in creating secure channels, these processes are still distinct entities, and the $$instinctive$$ mitigation only really applies to adding basic defense capabilities against unauthorized access but doesn't seem to address protecting against specific types of cyber$-$attacks, such as tampering or spoofing.

Another point is that it is crucial to consider all six aspects of the STRIDE classification in threat modeling. These six aspects are spoofing, tampering, repudiation, information disclosure, denial of service, and elevation of privilege. It is important to apply these threats to each element of the system to identify potential vulnerabilities and threats, even if they are not immediately noticed. It is essential to analyze all six categories, and no element should be left out. By doing so$,$ you can ensure that the system is more stable and secure$.$

Lastly, it is a good practice to manually number things when applying threats to each element of STRIDE classification, as that can help identify specific parts of the threat model, such as the trust boundaries and threats. If systems are more complex, numbering different aspects within the system can make it easier to communicate if any problems were to occur. In short, this would help identify which specific assets were at risk by which threats, and what countermeasures should be implemented to counteract those threats.