TY  - JOUR
A1  - Oosthoek, Kris
A1  - Dörr, Christian
T1  - Cyber security threats to bitcoin exchanges
BT  - adversary exploitation and laundering techniques
JF  - IEEE transactions on network and service management : a publication of the IEEE
N2  - Bitcoin is gaining traction as an alternative store of value. Its market capitalization transcends all other cryptocurrencies in the market. But its high monetary value also makes it an attractive target to cyber criminal actors. Hacking campaigns usually target an ecosystem's weakest points. In Bitcoin, the exchange platforms are one of them. Each exchange breach is a threat not only to direct victims, but to the credibility of Bitcoin's entire ecosystem. Based on an extensive analysis of 36 breaches of Bitcoin exchanges, we show the attack patterns used to exploit Bitcoin exchange platforms using an industry standard for reporting intelligence on cyber security breaches. Based on this we are able to provide an overview of the most common attack vectors, showing that all except three hacks were possible due to relatively lax security. We show that while the security regimen of Bitcoin exchanges is subpar compared to other financial service providers, the use of stolen credentials, which does not require any hacking, is decreasing. We also show that the amount of BTC taken during a breach is decreasing, as well as the exchanges that terminate after being breached. Furthermore we show that overall security posture has improved, but still has major flaws. To discover adversarial methods post-breach, we have analyzed two cases of BTC laundering. Through this analysis we provide insight into how exchange platforms with lax cyber security even further increase the intermediary risk introduced by them into the Bitcoin ecosystem.
KW  - Bitcoin
KW  - Computer crime
KW  - Cryptography
KW  - Ecosystems
KW  - Currencies
KW  - Industries
KW  - Vocabulary
KW  - cryptocurrency exchanges
KW  - cyber
KW  - security
KW  - cyber threat intelligence
KW  - attacks
KW  - vulnerabilities
KW  - forensics
Y1  - 2021
U6  - https://doi.org/10.1109/TNSM.2020.3046145
SN  - 1932-4537
VL  - 18
IS  - 2
SP  - 1616
EP  - 1628
PB  - IEEE
CY  - New York
ER  -