How does Blockchain Technology handle the security issues today?

Since its inception in 2009, Blockchain technology has proven to be nothing less than revolutionary to the world. Many narrow down this tech to the world of cryptocurrency only but this is a misconception. Cryptocurrencies indeed came from the development of Blockchain, but it’s wrong to make the two synonymous. The blockchain has done and continues to do so much more beyond the scope of cryptos.

  •  Blockchain is a universal technology in the true sense of the word as it can be applied in any industry and at any level.


What is Blockchain?

For those who are unaware, Blockchain is a distributed ledger technology (DLT) based on the peer-to-peer topology that facilitates data to be stored in thousands of servers globally which is simultaneously available to all the users of the network in real-time.

 So the benefit?

Any data stored on a blockchain is-

  • Transparent
  • Immutable and
  • Incorruptible something that is more important than ever before.

 The internet as we use today is littered with data scrapers and highly-skilled hackers which makes us exceedingly vulnerable to data theft Blockchain often called the Internet 2.0, has emerged as a key player in promoting more secure internet usage.

 How does blockchain technology handle the security issues of today? 

The greatest thing about blockchain is that it is decentralized and this helps in the accessibility and credibility of the data on it. All the data that is put in the system is always verified and one of the most advantageous factors about Blockchain is that since the network is spread across the world, even if one server is down or somehow damaged, there are thousands of other servers to verify the information.

How exactly it does so ?

Being connected to numerous servers allows the chain and all the data in it to be collapse-proof. Even if one part or block of the network is somehow compromised or hacked, the members of the network can compare any block with other blocks and weed out differences.

In simple words, any data put in the network is visible to all users, every member can easily identify if there have been any security issues and remedy them quickly, making it the best method for record-keeping.


Don’t fear the fraud

Blockchain also helps in the prevention of fraud. Every user of the blockchain verifies the information put into it, thus eliminating the possibility of the addition of any false and fabricated data on the chain. So, it becomes impossible to ‘fake’ any data on the blockchain either.

What if the data gets stolen?

Another security issue that blockchain eliminates is data theft.

Another security issue that blockchain eliminates is data theft.   flow chart/small diagram of the public and private key

  •  Each user on the blockchain gets two cryptographic keys when they first initiate a transaction- a private key and a public key.
  • The private key is available only to the user and is used for authenticating transactions by the user. The public key, which also acts as their public identity, is used in the verification of the digital signatures and proves the ownership of the private key.
  • Any hacker looking to steal data from the chain would require not just the public key, which is visible to all, but also the private key which is not at all accessible to anyone other than the rightful owner of the key.
  • If a hacker wants to corrupt the chain, they would need access to not one, not a hundred but every single computer linked to the chain throughout the globe.
  • The number of computers that store the data of the blockchain partially or completely (called nodes) could reach up to millions. So, even if one block gets hacked, it’s guaranteed that the whole blockchain can never be hacked. 

To put it simply, blockchain is tamper-proof, unbackable, and works with the agreement of all the users on the chain- the essence of human interactions.