Last week, the official website of the Bitcoin Gold had come across a distributed denial of serice (DDoS) attack. During this accident, Bitcoin Gold claimed the site suffered 10 million attack per minute.

With the DDoS attacks on the rise, these are rapidly becoming one of the main dangers to cybersecurity for businesses. When a server experiences a DDoS attack, it is flooded with a vast amount of spam traffic, which causes the bandwidth to become overwhelmed, resulting in the server either working inefficiently or no longer working at all. To generate this flood of spam, DDoS will infect devices ranging from mobile phones through to computers and transform these into bots which are then used to target servers.


As many businesses rely on their websites for sales of products and services, DDoS attacks can lead to a major loss in revenue. Other problems that have arisen with DDoS attacks are the methods previously used to fix them, such as blackholing and filtering the traffic, as these can often cause other problems. Blackholing stops all traffic to a website while trying to fix the DDoS attack, which causes further disruption to a business’ online sales, while filtering traffic can be ineffective in stopping the attack as it’s often hard to filter good and bad traffic efficiently.

How Blockchain cyber security can help fix these problems

As Blockchain creates a decentralised service where servers are linked, it can assist with DDoS attacks as, when one server is under attack, other servers can provide extra bandwidth so a business doesn’t find itself offline. Also, because Blockchain is a decentralised service, it’s harder for attackers to target a specific vector to attack to take a particular service offline.

Moreover, an blockchain infrastructure based on Ethereum is proposed to against the DDoS attack. The idea of the infrastructure is to create a registered-based type of smart contract which is used by the customer or Autonomous System(AS) that is under attack to store the IP address of the attackers. The list of the IP address of attackers will be further used as the target to be blocked or analysed in order to verify their authenticity. However, this idea has still not been applied into practise in the market.

Business example of Blockchain cybersecurity

Gladius is one example of a start-up that plans to offer additional bandwidth through Blockchain so that servers can more efficiently manage DDoS attacks. How it works is that any additional bandwidth that a business’ server requires while under a DDoS attack can be purchased through other business’ servers, using a cryptocurrency that Gladius has created called GLA. A major benefit of this service is that businesses will only need to purchase additional bandwidth during an attack, rather than having to pay for a higher amount of bandwidth on a permanent basis, which is far more cost-effective.

Limitations of Blockchain

The limitations of Gladius using Blockchain for its bandwidth purchasing service is that cybercriminals may try to monetise zombies which will transform them from their prior roles as DDoS attackers into defenders for hire against DDoS attacks. Further security measures will need to be in place to avoid this issue arising.


While Gladius won’t start selling its cryptocurrency so that businesses can purchase additional bandwidth using Blockchain until next year, the benefits it offers in terms of providing a cost-effective alternative for fighting DDoS attacks makes it a far more viable alternative than previous methods utilised. There is also another benefit which Gladius can offer businesses using Blockchain cybersecurity, which is its cached data sharing capabilities to avoid data corruption or hacking. Blockchain’s versatility makes it ideal for a broad range of cyber security applications.

Startups Involved



  • A Blockchain-Based Architecture for Collaborative DDoS Mitigation with Smart Contracts – Semantic Scholar. (2017). Retrieved 1 November 2017, from