Review of Blockchain Security and Privacy

Muralidhara, Shishir; Usha, B A

doi:10.1109/iccmc51019.2021.9418424

Cited by 8 publications

(11 citation statements)

References 12 publications

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“…As described by [90,116,120], malicious callee contracts can directly modify the state variables of the caller contracts. Similarly, fault injection might be possible, according to Hajdu et al [128] and Muralidhara et al [80]. Muralidhara et al [80] additionally add code injection and structured query language (SQL) injection.…”

Section: Contract-programming Vulnerabilitiesmentioning

confidence: 99%

“…Similarly, fault injection might be possible, according to Hajdu et al [128] and Muralidhara et al [80]. Muralidhara et al [80] additionally add code injection and structured query language (SQL) injection.…”

Section: Contract-programming Vulnerabilitiesmentioning

confidence: 99%

“…Selfish mining exploits the probabilistic finality vulnerability, the honest mining assumption vulnerability, and the rewards for uncle blocks vulnerability. Miners may withhold new blocks and selectively publish some blocks to earn an unfair share of rewards [51,52,67,76,80,81,90,103]. Wang et al [76] additionally describe stubborn mining and the block-withholding attack.…”

Section: Mining Issuesmentioning

confidence: 99%

“…The deeper a block is contained in the blockchain, the more likely it is that it will not be reverted. The 51% attack [33,47,49,52,67,[72][73][74][75][76][77]80,90,103,131], also called the majority attack, describes the fact when a single user or group of users gets control of more than 50% of the hashing power in a PoW blockchain. In a PoS blockchain, this could happen in specific cases, as outlined by Hao [75].…”

Section: Mining Issuesmentioning

confidence: 99%

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Analyzing the Threats to Blockchain-Based Self-Sovereign Identities by Conducting a Literature Survey

Pöhn,

Grabatin,

Hommel

2023

Applied Sciences

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Self-sovereign identity (SSI) is a digital identity management model managed in a decentralized manner. It allows identity owners to manage and store their digital identities in a software wallet, for example, on a smartphone, without relying on centralized providers. This approach tries to enhance the security and privacy of digital identities and, thereby, their owners. With the new eIDAS regulation, elements of SSI, such as the wallet, are being pushed onto the market. However, since the model is relatively new, the security threats are still not fully known. This is shown by a brief security analysis of selected existing SSI wallets. In order to get a picture of the known threats, we systematically analyze and categorize related work in the field of SSI and elements applied by SSI. We then evaluate their application to current SSI systems and identify future work.

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Section: Contract-programming Vulnerabilitiesmentioning

confidence: 99%

Section: Contract-programming Vulnerabilitiesmentioning

confidence: 99%

Section: Mining Issuesmentioning

confidence: 99%

Section: Mining Issuesmentioning

confidence: 99%

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Analyzing the Threats to Blockchain-Based Self-Sovereign Identities by Conducting a Literature Survey

Pöhn,

Grabatin,

Hommel

2023

Applied Sciences

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“…Unfortunately, blockchains are decentralized for those determined hackers and extend over regularly updated and synchronized peerto-peer networks. Blockchains have no single failure point and cannot be changed by a single machine as they are not centrally stored [38].…”

Section: ) Security By the Blocksmentioning

confidence: 99%

Security and Privacy of Blockchain-Based Single-Bit Cache Memory Architecture for IoT Systems

et al. 2022

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This paper provides an overview of blockchain technology's security and privacy features, as well as an overview of IoT-based cache memory and single-bit six transistor static random-access memory cell sense amplifier architecture. Each chip's memory is used for recorded as blocks, which are encrypted and used as a blockchain for other memory devices. The architectures comprise of the circuit of write driver, six transistor static random access memory cells, and sense amplifiers such as current differential sense amplifier, charge transfer differential sense amplifier, and voltage latch sense amplifier. Furthermore, different parameters such as the number of transistors, sensing delay, and power consumption have been analyzed for varying resistance values (i.e., R=42.3 and R=42.3K ). Apart from that, power reduction techniques such as dual sleep, forced stack, sleep transistor, and sleep stack are used to optimize power consumption. These power reduction techniques are applied over different blocks of architecture, such as six transistors static random access memory cell and sense amplifier to optimize power consumption of the architecture. The conclusion arises that a single-bit six transistor static random access memory cell with power reduction dual sleep technique voltage latch sense amplifier with power reduction dual sleep technique in architecture consumes 11.65µW of power and has 33 transistors which are lowest from other architectures.INDEX TERMS Circuit of write driver (CWD), sense amplifier (SA), current differential sense amplifier (CDSA), charge transfer differential sense amplifier (CTDSA), voltage latch sense amplifier (VLSA), six transistor static random-access memory (6T-SRAM).

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A Comprehensive Analysis of Blockchain Network Security: Attacks and Their Countermeasures

Sodhi,

Sharma,

Miglani

2024

Communications in Computer and Information Science

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Review of Blockchain Security and Privacy

Cited by 8 publications

References 12 publications

Analyzing the Threats to Blockchain-Based Self-Sovereign Identities by Conducting a Literature Survey

Analyzing the Threats to Blockchain-Based Self-Sovereign Identities by Conducting a Literature Survey

Security and Privacy of Blockchain-Based Single-Bit Cache Memory Architecture for IoT Systems

A Comprehensive Analysis of Blockchain Network Security: Attacks and Their Countermeasures

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