Analysis and Research on Blockchain Security Technology: A Case Study of the Poly Network Security Incident_Vol. 3 No. 4 (JBDC 2025)_Journal of Big Data and Computing (ISSN: 2959-0590)

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Analysis and Research on Blockchain Security Technology: A Case Study of the Poly Network Security Incident

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DOI: https://doi.org/10.62517/jbdc.202501411

Author(s)

Ruowan Zhang

Affiliation(s)

School of Civil Engineering and Transportation, Northeast Forestry University, Harbin, Heilongjiang, China

Abstract

Blockchain technology has developed rapidly in recent years, with cross-chain technology emerging as a crucial means to achieve interoperability between different blockchains. However, security issues in cross-chain systems have become increasingly prominent. This paper takes the Poly Network security incident in 2021 as a case study to conduct an in-depth analysis and research on blockchain security technology. It first introduces the details of the Poly Network security incident, then analyzes the causes of the security problems, proposes cross-chain transaction risk management strategies, and focuses on the introduction and optimization comparison of ECC-ElGamal technology in smart contracts. Additionally, it delves into the operational depth of elliptic curve technology and designs Python experiments to verify its performance and security. Finally, it summarizes the research content and looks forward to the future development of blockchain security technology.

Keywords

Blockchain Security; Poly Network; Smart Contract; Cross-Chain Technology; ECC-ElGamal; Elliptic Curve Operation; Python Experiment

References

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