With the advent of globalization, electronic devices and systems are progressively vulnerable to counterfeiting and piracy. It is extremely difficult to ensure the security, integrity, and authenticity of such devices, as most of them are manufactured in an untrusted environment. It is practically impossible to determine the origin of these devices and track their route in the supply chain. Ensuring the security of these non-authentic devices and systems is a great concern for the government and industry, as an adversary can tamper the design with creating a backdoor or inserting a hardware Trojan. These non-authentic devices and systems may also be less reliable as they may not be tested properly. Moreover, different intellectual properties (IPs) may be subjected to piracy.  In this talk, Prof. Guin will present different hardware threats, existing research to mitigate them, and the challenges and limitations to implement them.