Blockchain avoid tampering

Last year Bloomberg ran the most explosive cybersecurity article of the year. According to the story, Amazon Web Services uncovered the information while carrying out due diligence for a government contract. Many electronics manufacturing companies are based out of Asia, and there is a shortage of U. Sources for the article remained unidentified, and several of the companies referenced issued denials. Other media criticized the piece as lacking credibility, but Bloomberg nonetheless stood by its veracity and promoted one of the authors.

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Content:

• Blockchain could prevent odometer tampering, EU study reveals
• Designing blockchain systems to prevent counterfeiting in wine supply chains: a multiple-case study
• Are blockchains immune to all malicious attacks?
• Here’s the truth about the crypto miner that comes with Norton Antivirus
• How Blockchain Structures Prevent Data Tampering?
• How blockchain can help fight cyberattacks
• Known Attacks
• On the blockchain, there are flaws too
• Understanding a 51% Attack on the Blockchain
• How does a block chain prevent double-spending of Bitcoins?

WATCH RELATED VIDEO: How the US government is using blockchain to fight fraud - Kathryn Haun - TEDxSanFrancisco

Blockchain could prevent odometer tampering, EU study reveals

You can find more information and program guidelines in the GitHub repository. If you're currently enrolled in a Computer Science related field of study and are interested in participating in the program, please complete this form. The technology has existed for a few years. It is prevalent when cryptocurrencies such as Bitcoin are mentioned. However, according to numerous research reports, businesses have not fully adopted the use of cryptocurrencies.

Most of these businesses rely on traditional methods in their operations instead of using blockchain technology. Blockchain technology can be described as a structure that stores public transaction records in various databases in a network-connected environment through peer-to-peer nodes. The transactional records are known as blocks, and the various interconnected databases are referred to as a chain.

Due to this, the information is highly secured. Blockchain technology utilizes the hash encryption algorithms, in most cases SHA , to ensure that data is secure. Blockchain technology involves adding transaction details to digital ledgers through a process known as mining. Mining involves generating the hash for the transaction block, which ensures that blockchain is secure. The reader will understand what it entails, its risks, and possible ways to prevent it. The attackers can stop the confirmation and order of new transactions.

The malicious agents can then rewrite parts of a blockchain and reverse the transactions. The hash power is more critical in the attacks.

If the attacker possesses a higher percentage, the likelihood of attacking the system is also high. The damages caused by the attack are also dependent on the same factor. They can delay new transactions initiate the use of the same coin several times. Every blockchain utilizes Proof-of-Work PoW mechanism to validate the transactions. The attackers cause network disruptions by delaying the confirmation and the arrangement of the blocks in chronological order.

This causes delays for the transaction to be confirmed and stored in a block. This leads to double-spending a coin. Moreover, genuine miners earn less for updating the blockchain as the attackers steal their shares.

This raises serious concerns about the reliability, security, and trustworthiness of a blockchain. The confidence of its users and miners is highly compromised. The attackers can dupe the new and inexperienced users to validate and confirm the transactions that they can later invalidate. The reason is that the attackers can interfere with unconfirmed blocks and transactions in a blockchain. This leads the users into mistrusting the blockchain, causing it to reduce value.

These kinds of attacks may cause some cryptocurrencies to be unlisted due to security concerns. However, the two differs depending on the way they manipulate the blockchain. This, in turn, can stop further minings or coin reusability. However, various smaller projects are prone to this kind of attack. GRIN, a privacy-focused cryptocurrency blockchain, had to stop its payouts and advised its miners to stop their operations until the issue was resolved.

Later the blockchain was able to regain the network and imposed measures to avoid the reoccurrence of the attack.

It is a cryptocurrency project that aims to keep mining power decentralized. The attack saw the Vertcoin genuine blocks being replaced by the blocks the attacker wrote. The blockchain reorganized and caused double spends which lost the users vast amounts of money. Vertcoin had to switch to a more powerful PoW algorithm to ensure security on its platform. It also had to block powerful mining chips from the network to keep its mining more powerful and community-based. The blockchain experienced two reorganizations in two days that let it double-spend, totaling a vast amount of money.

The BTG community begged the blockchain to change its algorithm to a more secure one. Ethereum classic uses the PoW consensus algorithm similar to Bitcoin. It would be impossible for a single miner or a group to attack the network by outbuilding the longest validated blockchain.

To achieve the attack, it would mean that the attacker has to own powerful hardware and requires tremendous energy. Also, an attacker may need luck since the mining process would be random.

A good example is Bitcoin, where its network and hash rate are vast and complex enough to be a substantial initial investment for an attacker to rent mining equipment. Ethereum Classic, on the other hand, is more prone to the attack since its overall hash rate is relatively small compared to Bitcoin.

A single miner can become the majority player in a small blockchain network. All the blockchain networks that use PoW have a policy that the miners have to upgrade their equipment regularly.

Failure to do so, may lead to them not receiving the block rewards, and they will fall behind other miners in the network. In most cases, the PoS incentives are controlled by most affluent users unlikely to perform the attack. However, blockchains have moved from this structure, and they prefer more decentralized alternatives such as Delegated-Proof-of-Stake DPoS.

When using the PoS or DPoS, a user with a minimal stake level in a network is voted a block validator. The validators are voted in by the community. In case of collusion to compromise the network, they are thrown out of the network by the community.

It is also effective in avoiding double-spending as the rules for the malicious validators are coded into the blockchain. An attacker can manipulate the blockchain to reproduce new blocks faster to initiate the second attack. In summary, an attacker can attack a blockchain again. It is upon the blockchain to ensure that their systems are more secure and resilient. Risks and vulnerabilities will always be expected when growing, fast, promising technology like cryptocurrency and blockchain.

The upcoming technology promises to solve these security hitches and even improve the system. However, these kinds of attacks should help the companies and industries learn new prevention ways and improve their existing platforms for the future.

The future is also promising in this field, and we cannot wait to see more improvements in the industry. Peer Review Contributions by: Willies Ogola. The simple, flexible deployment options your customers expect with the low overhead your team craves. For Infrastructure Providers. Simple, centralized, intelligent management of distributed compute locations on massive scale. Causes network disruption Every blockchain utilizes Proof-of-Work PoW mechanism to validate the transactions.

Using Proof of Stake A single miner can become the majority player in a small blockchain network. Strong network community When using the PoS or DPoS, a user with a minimal stake level in a network is voted a block validator. Wrapping up Risks and vulnerabilities will always be expected when growing, fast, promising technology like cryptocurrency and blockchain.

Happy learning! Further reading Understanding Blockchain Technology. Implementation of Blockchain Consensus Algorithm. Chain Reorganization.

Designing blockchain systems to prevent counterfeiting in wine supply chains: a multiple-case study

Open access peer-reviewed chapter. Blockchain has been widely known thanks to Bitcoin and the cryptocurrencies. In this chapter, we analyze different aspects that relate to the application of blockchain with techniques commonly used in the field of cybersecurity. Beginning by introducing the use of blockchain technology as a secure infrastructure, the document delves into how blockchain can be useful to achieve several security requirements, common to most applications. The document has been focused on some specific cybersecurity disciplines to maintain simplicity: backup and recovery, threat intelligence and content delivery networks. As illustrated, some projects and initiatives are in the process of joining these two fields to provide solutions to existing problems.

Are blockchains immune to all malicious attacks?

This misconception hampers participants from understanding the security differences between public and private blockchains and adopting blockchain technology in suitable contexts. The results identify a number of security and trust assumptions against various blockchain architectures, participants, and applications. Findings indicate that private blockchains have serious limitations for securing the interests of users in macrosocial contexts, due to their centralized nature. In contrast, public blockchains reveal trust and security shortcomings at the micro and meso-organizational levels, yet there is a lack of suitable desktop case studies by which to analyze sociotechnical security at the macrosocial level. If this is the case, then it is imperative to develop blockchains into functional, digital institutional infrastructure with transparent governance, security, and operational rules. Yet, it is rarely acknowledged that security and trust in blockchains are contextual, according to the type of blockchain architecture, the governance model, the needs of the participants using the system, and the context in which it is being applied. By adopting a sociotechnical security analysis framework, this paper argues that both public and private blockchains have social, technical, and infrastructure layer security shortcomings. For private blockchains, these trust and security issues are evident in macrosocial societal applications.

Here’s the truth about the crypto miner that comes with Norton Antivirus

This incident has certainly planted seeds of mistrust among the people. Also, EVMs have hardware and software vulnerabilities that can be exploited to compromise the machines to carry out election malpractices. Now, in order to overcome this challenge, technology enthusiasts across the nation are suggesting to leverage emerging technologies for EVMs. And among all the suggested technologies, blockchain seems to be most sought after and its believed that it can solve the EVM tampering debates all at once. Blockchain has all kinds of potential for improving human systems and by switching voting systems over to the blockchain, it can enhance the level of transparency during the polls.

How Blockchain Structures Prevent Data Tampering?

But the security of even the best-designed blockchain systems can fail in places where the fancy math and software rules come into contact with humans, who are skilled cheaters, in the real world, where things can get messy. Bitcoin is a good example. The owners of these nodes are called miners. Miners who successfully add new blocks to the chain earn bitcoins as a reward. The fingerprint, called a hash, takes a lot of computing time and energy to generate initially.

How blockchain can help fight cyberattacks

Blockchain tables are append-only tables in which only insert operations are allowed. Deleting rows is either prohibited or restricted based on time. Rows in a blockchain table are made tamper-resistant by special sequencing and chaining algorithms. Users can verify that rows have not been tampered. A hash value that is part of the row metadata is used to chain and validate rows.

Known Attacks

You can find more information and program guidelines in the GitHub repository. If you're currently enrolled in a Computer Science related field of study and are interested in participating in the program, please complete this form. The technology has existed for a few years.

On the blockchain, there are flaws too

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Offer does not apply to e-Collections and exclusions of select titles may apply. Offer expires June 30, Browse Titles. What is Blockchain 1. Blockchain is a state-of-the-art solution saving the growing list of records of any online activity or action as pieces of blocks using cryptography. A chain of blocks containing data that is bundled together.

Understanding a 51% Attack on the Blockchain

A successful cyber-attack can be the downfall of any well-positioned business. Data breaches not only cause significant financial losses but are also the leading cause of a bad reputation for victim companies. Blockchain started out as the technology behind Bitcoin but has popularly grown into a promising mitigation technology for cybersecurity. What is Blockchain 4. Use Cases of Blockchain for Cybersecurity. It is quite a tough and challenging time for businesses that operate on digital network platforms. Cyber-attacks and breaches continue to haunt online activities at even more sophisticated and damaging levels.

How does a block chain prevent double-spending of Bitcoins?

Data integrity is the property that the data used in a solution is correct, reliable, and useful for all participants. This module covers typical considerations around ensuring that the data used in a blockchain solution is correct, reliable, timely for all participants, and preserved from the point of data creation to the point of usage on the blockchain. This module emphasises that blockchain technology does not necessarily ensure accuracy of data entered on-chain.