@Article{jcs.2020.010045,
AUTHOR = {Xiaojun Pan, Zhuoran Wang, Yanbin Sun},
TITLE = {Review of PLC Security Issues in Industrial Control System},
JOURNAL = {Journal of Cyber Security},
VOLUME = {2},
YEAR = {2020},
NUMBER = {2},
PAGES = {69--83},
URL = {http://www.techscience.com/JCS/v2n2/39507},
ISSN = {2579-0064},
ABSTRACT = {Programmable Logic Controllers (PLC), core of industrial control 
systems, is widely used in industrial control systems. The security of PLC is the 
key to the security of industrial control systems. Nowadays, a large number of 
industrial control systems are connected to the Internet which exposes the PLC 
equipment to the Internet, and thus raising security concerns. First of all, we 
introduce the basic principle of PLC in this paper. Then we analyze the PLC 
code security, firmware security, network security, virus vulnerability and 
Modbus communication protocol by reviewing the previous related work. 
Finally, we make a summary of the current security protection methods.},
DOI = {10.32604/jcs.2020.010045}
}