CCS Concepts  
  $\cdot$ General and reference $\rightarrow$ Surveys and overviews;  
  $\cdot$ Security and privacy $\rightarrow$ Distributed systems security

ACM Reference Format

1 INTRODUCTION  

2 OVERVIEW OF SMART CONTRACTS AND SURVEY METHODOLOGY  

3 VULNERABILITY IN SMART CONTRACTS  

4 ATTACKS ON SMART CONTRACTS  

5 DEFENSE METHODOLOGIES  

6 EVALUATION  

7 CONCLUSIONS