Detecting Ponzi Schemes on Ethereum: Towards Healthier Blockchain Technology
2019-10-22
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Blockchain Security
Eclipse Attacks on Bitcoin’s Peer-to-Peer Network
2019-10-22
The author of this paper has studied the source code of Bitcoin's network layer in depth and found a major security hole in Bitcoin design at the network layer. The eclipse attack [Tampering with the delivery of blocks and transactions in bitcoin] is a possible attack to Bitcoin network. In such an attack, attackers control parts of network communication, create an adverse network to isolate victims from the rest of normal peers on the network, and block views of these victims. Then, attackers can take advantage of the victims’ computing power for their own malicious purposes, such as selfish mining, double spending and etc. To avoid the happen of eclipse attacks on Bitcoin network, several countermeasures, like deterministic random eviction, more ongoing connections and etc, have been explored and purposed in their work》
Blockchain Security Peer to Peer
OmniLedger: A Secure, Scale-Out, Decentralized Ledger via Sharding
2019-11-05
The paper presents a novel distributed ledger OmniLedger. Previous distributed ledgers (DLs) are unable to avoid trade-offs between decentralization, scaling and security, i.e. those DLs only hold two out of the three features. So A great innovation of OmniLedger is its assemble all the three features. The structure of the paper is clear. Detailed descriptions of the system design are given. Ideal models and practical experiments show its good performance. Weaknesses and future works are appropriately discussed.
Blockchain Security Scaling Sharding Consensus
A survey on the security of blockchain systems
2019-11-05
这是一篇对区块链系统安全性的研究,通过分析流行的区块链系统,并调查相应的真实攻击,来对区块链的安全威胁进行系统的调研。同时,作者还回顾了区块链的安全增强解决方案,并提出了一些未来的方向来推动这一领域的研究工作。
Blockchain Security Smart Contract Cryptocurrency
S-gram: Towards Semantic-Aware Security Auditing for Ethereum Smart Contracts
2019-11-05
In this paper, the authors present the S-gram semantic-aware security auditing technique for Ethereum smart contracts. The S-gram highlighted the insight that statistical abnormality is very much likely to indicate the existence of vulnerabilities. It's novel that the paper introduces the natural language processing technic to analysis the smart contract code. The n-gram language model achieved an over 90% accuracy in identifying different types of potential vulnerabilities.
Security Smart Contract Ethereum
Who Spent My EOS? On the (In)Security of Resource Management of EOS.IO
2019-11-06
A well understanding of potential threats and their underlying causes is necessary when building a secure system. This paper is the first study that analyzes the security of the EOS.IO system and points out that all of the security vulnerabilities they find stem from the EOS.IO design, which is beneficial to the whole EOS ecosystem.
Security Smart Contract EOS


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