The world is changing rapidly each day. Especially in the IT world, end users demand simpler, easier, and faster services in their exposed and connected daily routine in the electronic products. Samsung has remained a leader in security technology in smartcard product segment. Nevertheless, it is being challenged to improve its security mechanisms to protect against any annoying security attacks efficiently. Owing to the demands, the mechanism has also evolved and will continue to strengthen. This paper illustrates security attacks and how Samsung is constructing the Best-in-Class system-level security solution.