The best way to prevent a chip-level security vulnerability from being exploited is to install vendor patches.
A chip-level security vulnerability is a flaw in the design or implementation of a processor that allows an attacker to bypass the normal security mechanisms and access privileged information or execute malicious code. A vendor patch is a software update provided by the manufacturer of the processor that fixes or mitigates the vulnerability. Installing vendor patches can help to protect the system from known exploits and reduce the risk of data leakage or compromise.
Security awareness training, reviewing hardware vendor contracts, and reviewing security log incidents are not as effective as installing vendor patches for preventing a chip-level security vulnerability from being exploited. Security awareness training is an educational program that teaches users about the importance of security and how to avoid common threats. Reviewing hardware vendor contracts is a legal process that evaluates the terms and conditions of the agreement between the organization and the processor supplier.
Reviewing security log incidents is an analytical process that examines the records of security events and activities on the system. These methods may be useful for other security purposes, but they do not directly address the root cause of the chip-level vulnerability or prevent its exploitation. References: Protecting your device against chip-related security vulnerabilities, New 'Downfall' Flaw Exposes Valuable Data in Generations of Intel Chips