Missing Source Identifier in Entity Transactions on a System-On-Chip (SOC)

In a System-On-Chip, hardware agents like processors or accelerators constantly send transactions to access resources or trigger actions. Each transaction should carry a security identifier (like a digital keycard) that tells the receiving agent the sender's privilege level. Without this identifier, the receiving agent has no way to correctly enforce security policies for that specific request. This missing identifier forces the destination into a guesswork scenario. It may either reject the transaction entirely—causing a functional denial-of-service—or default to allowing it, which can lead to privilege escalation or unauthorized access to protected assets. The core issue is inconsistent tagging of transactions at their source, undermining the chip's entire internal security model.