Why the Blockchain wall is a bit too thick for the hackers to breakdown

By arvind |Email | Oct 31, 2018 | 16887 Views

Wasn't 2017 a great year, maybe not so much for data breaches, the equivalent of a year (2016) data was lost/stolen in a time span of 6 months in 2017? One could say that the more crops we have the more crops will rot. Now we have data more than ever, and the speed at which data is being generated is crazy fast. Almost 2 billion data was stolen in the first 6 months of 2017. This data breach has a colossal after effects from litigation, to high repairing costs, stock prices dropping immensely, impacts on brand value which lead to anxious customers and that worse part this is not even the half of the after math.
In the last couple of years while technology taking massive strides, which is good for businesses and companies, it also brings out the fear of losing data. Entrepreneurs around the globe have concerns about their data protection now more than ever. 
In the time of data protection crisis every organisation and government authority globally are looking up to blockchains, at this hour it is all that could make the information system hundred percent hackproof. Why is blockchain being considered the lock that will keep the house from getting robbed? One of the main reasons or a reason that could make blockchains the future of cybersecurity is its mechanism. Its consensus mechanism that necessitates validation from the rest of the nodes in a transaction trail makes it almost impossible for hackers to introduce an alien element without being detected.
Let's look at some 'why's' blockchains is the thing that could protect your data from hackers in the future.
Decentralized storage: there is no administrator at the centre, making the blockchain system completely decentralised. Every node (participants) that participates on the network is responsible to administer the network collectively. The data in blockchain system is copied across all the participants' computers that are on the network. By completely doing away with the hierarchies of a centralized authority, it becomes almost impossible to wipe out the decentralized information held within the chain. Furthermore, it makes the job of hacking extremely difficult. Hackers must put in a significant amount of time and resources to acquire the control of a single database even. Imagine having to do that for hundreds, if not thousands, of different copies of that data.
Mechanism is consensus:  the difference between blockchain system and a centralized system is, while in a centralized system there are a few administrators responsible to validate the authenticity of a data, a blockchain network is a self-regulating infrastructure that involves contribution and agreement of all the participants on the network. Before any data or transaction can be posted on the network it needs validation from every participant on the network. The chance a deceptive information goes unaudited on network is nil. The blockchain model inherently supports the creation of a peer-to-peer consensus mechanism that transparently ratifies every transaction, informing each element of the network simultaneously. This feature enhances the authenticity of contracts and agreements.
Strong Encryption Mechanism: Blockchain technology uses a hashing technique called SHA256 to encrypt the data before posting it on the network.
#Hashing is done in such a way that each newly formed block of information carries the address of the previous block. This #hash is designed in such a way that even one single change attempted on any block in the chain would completely change the hash of all the blocks. Furthermore, even if a hacker manages to change the entry and #function in one database, the rest of the nodes or computers storing the blockchain data will have the original entry to quickly identify the fraud. The hackers can then instantly be barred from operating on the network. Additionally, a secure hash encryption, private key verification and the simulated testing of software codes underlying blockchain frameworks in white-box situations are expected to add more layers to the already intricate and robust security aspect of the blockchain. Most importantly, blockchain removes the human factor in cyber transactions completely. Most researchers agree that human errors are one of the integral reasons for the vulnerability of any centralized security architecture. Password-based frameworks can be hacked into very easily, either because of them being too easy to guess or to steal. The blockchain model, however, uses the expansive nodal network to act as an automatic ratification authority and a huge wall of defense. In fact, the practical implementation of blockchain-based platforms has already started across domains. Financial services are testing blockchain for securing payments, extending LOCs', state governments are in the pilot phase for deploying a land registry on blockchain, healthcare industry is experimenting to securely store and share patient health records using the technology, entertainment industry is exploring blockchain to counter piracy, food supply chains are deploying the technology to track food quality and many more.
Blockchain-A necessity to ensure future cybersecurity
With the advancement in technology and the convergence of everything into Internet-of-Things/AI, the sheer scale of the amount of data generated, and the possible vulnerable points of entry on offer for hackers, will be enormous. Centralized security mechanisms will fall woefully short of the magnitude at which security would need to be ensured. In such a scenario, blockchain appears to be the perfect kind of security architecture due to its highly distributed nature. Only the large-scale node-based model of blockchain provides a scope wide enough to include the massive IoT network and the thousands of sensors it incorporates within itself. Also, from a cost perspective, blockchain will be advantageous for organizations as the costs could be shared and the growth of the model itself enhances security inherently. The world of cybersecurity has been trying for long to stay one step ahead of the hackers in the cat-and-mouse game of ensuring safe transactions. With blockchain at the helm, it might just race miles ahead.

Source: HOB