@Article{jcs.2021.016349,
AUTHOR = {Le Lai,Tongqing Zhou, Zhiping Cai, Zhiyao Liang, Hao Bai},
TITLE = {A Survey on Security Threats and Solutions of Bitcoin},
JOURNAL = {Journal of Cyber Security},
VOLUME = {3},
YEAR = {2021},
NUMBER = {1},
PAGES = {29--44},
URL = {http://www.techscience.com/JCS/v3n1/42437},
ISSN = {2579-0064},
ABSTRACT = {Bitcoin is known as the first decentralized digital currency around the 
world. It uses blockchain technology to store transaction data in a distributed 
public ledger, is a distributed ledger that removes third-party trust institutions.
Since its invention, bitcoin has achieved great success, has a market value of 
about $200 billion. However, while bitcoin has brought a wide and far-reaching 
impact in the financial field, it has also exposed some security problems, such as 
selfish mining attacks, Sybil attack, eclipse attacks, routing attacks, EREBUS 
attacks, and so on. This paper gives a comprehensive overview of various attack 
scenarios that the bitcoin network may be subjected to, and the methods used to 
implement the attacks, and reviews the solutions and countermeasures proposed 
against these attacks. Finally, we summarized other security challenges and 
proposed further optimizations for the security of the bitcoin network.},
DOI = {10.32604/jcs.2021.016349}
}