In this paper, we outline security issues on IEEE 1149.1 JTAG. The JTAG interface is provided for its beneficial features, such as debugging and downloading firmware, but attackers are abusing it by reverse engineering and by modifying firmware. Hence, they are able to steal confidential information in the system or are able clone the embedded system. In order to solve this problem, a variety of security techniques are proposed to improve safety. These are classified based on the circuitry, the authority, the integrity, the confidentiality, the access control, and the authentication.
['Kyungroul Lee', 'Yeunsu Lee', 'Hyeji Lee', 'Kangbin Yim']
A Brief Review on JTAG Security