Blockchain-enabled Internet of Things: Decentralization and Security Concerns

In the fields of transportation, smart cities, medical care, and the military, the Internet of Things (IoT) has provided several services. By 2020, it is estimated that 50 billion devices will be linked to the Internet of Things, thanks to the growth of the IoT but security, privacy, and data storage have all become major concerns. It’s difficult to scale the existing centralized architecture model in IoT systems to meet the needs of potential IoT systems.

In many ways, the Internet of Things is fantastic. However, technology has not yet matured, and it is not completely secure. Many security challenges of IoT remain for the entire IoT ecosystem, from manufacturers to users, including standards for manufacturing, Insecure data transfer, and storage.

Lack of universal IoT security standards

Nearly every day, a new IoT device is released, each with unknown vulnerabilities. For example, Most Bluetooth fitness trackers remain visible after the first pairing, a smart refrigerator can show Gmail login credentials, and a smart fingerprint padlock can be activated using a Bluetooth key with the same MAC address as the padlock itself. This is one of the most serious security concerns with IoT. Manufacturers will continue to create products with unknown vulnerabilities because there are is a lack of IoT security standards.

A lack of user awareness and knowledge

Technology users have learned how to stop spam and phishing emails, run virus scans on their computers, and protect their WiFi networks with strong passwords over time. However, IoT is a relatively new technology, and many people are unfamiliar with it.

Device Update Management Issues with IoT Security

Insecure software or firmware is another cause of IoT security risks. Even if a manufacturer sells a system with the most recent software update, new problems would almost certainly appear.

High vulnerability to Malware attacks

Ever heard of a Botnet Attack? Botnet attack is an attack where an attacker creates an army of computer which sends a bunch of request per second which causes any system to crash down. This is the problem that most IoT systems are vulnerable to malware attacks. They lack the software protection updates that a device receives on a regular basis. As a result, they are quickly transformed into infected zombies and used as weapons to transmit massive quantities of data which can hinder any system.

Blockchain technology solutions to IoT

Blockchain has emerged as a promising research field for addressing the above-mentioned issues. Blockchain is a decentralized network that can store all transaction data. Without depending on a central authority, it can achieve the necessary protection and reliability in an untrustworthy environment. To prevent tampering and imitating, blockchain will allow IoT devices to send data to the blockchain ledger.

Well, one of the issues such as cloud server downtime can be solved using the technology of blockchain. Cloud servers are sometimes down due to reasons such as software bugs, malware attacks, or cooling issues. So looking at blockchain technology, there is no single point of failure because every block in the blockchain holds identical information.

So when the data is manipulated and put to inappropriate use, blockchain networks can easily detect this and it can be easily prevented as there is a chain of blocks that have identical information.

In the ecosystem of IoT, the number of devices is increasing day by day. The increasing number of devices interacting with each other through the medium “Internet”. This creates hurdles because most of the data from the devices are maintained on the central servers. So this means that if any device wants to communicate with a device in the ecosystem, the data flow will be happening on the central servers, hence a centralized network won’t be an effective approach. Blockchain enables IoT systems to coordinate the process of transactions between devices. Blockchain can improve the security and reliability of IoT systems, making them more robust. With the support of a distributed ledger, Blockchain allows for faster peer-to-peer messaging, as seen in Fig. 2.

Wrap Up

However, blockchain technology is still in its early stages, and integrating it with the Internet of Things is especially difficult. This article explains the potential of blockchain technology in IoT and IoT applications that can be combined with blockchain technology were also highlighted. I hope that this article has provided a basic understanding of the need for blockchain technology in IoT.



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