In recent years, blockchain technology has grown in popularity and use, becoming an important part of our world. But with growth comes increased interest and risk, and there’s no shortage when it comes to blockchain hacks. Here, we take a look at some of the boldest blockchain hacks that have been uncovered in recent years—the ones that made headlines and shocked the cryptocurrency community.
1. The Most Infamous Blockchain Hacks of All Time
The DAO Disaster – 2016
In 2016, an Ethereum-based decentralized organization, known as The DAO, launched an Initial Coin Offering (ICO). Unfortunately, an attack on the system led to the theft of over $50 million from their coffers. The hacker was able to exploit a loophole in the code that allowed them to withdraw Ether from the crowdfunding campaign. It eventually caused the Ethereum developers to hard-fork the mainnet, which contributed to the current Ethereum-Ethereum Classic split.
The NiceHash Heist – 2018
In late 2017, the NiceHash mining service was hit by a major heist, resulting in over $60 million worth of Bitcoin being stolen. NiceHash functioned by allowing users to rent out their GPU power. The hacker accessed user accounts to steal the funds, as the security in NiceHash wasn’t strong enough to protect the funds. NiceHash was later replaced by CryptoMining.Farm.
Coincheck Hack – 2018
In early 2018, the Japanese exchange Coincheck suffered a major security breach. The hackers, who remain unknown, went after Coincheck’s NEM wallets and managed to get away with over $500 million worth of NEM tokens. This was one of the largest crypto heists of all-time, and even led to Japan’s Financial Services Agency to demand an increase in security for crypto exchanges within the country.
Bitfinex – 2016
Bitfinex is a Hong Kong based crypto-currency exchange that was hacked in 2016. Over $72 million worth of Bitcoin was stolen from the exchange and the details of the hack remain a mystery to this day. Bitfinex did offer a 36% discount to the affected users, but the damage to its reputation helped fuel the Bitcoin bear market of late 2017 and early 2018.
2. Hacking the World’s Biggest Cryptocurrencies
What is Cryptocurrency Hacking?
Cryptocurrency hacking is the practice of illegally obtaining digital assets, usually by using digital technology or malware, to gain unauthorized access to the network or systems of users holding or trading cryptocurrency. It can also refer to the taking of funds from a user’s wallet or account without the user’s permission.
Types of Cryptocurrency Hacks
There are several different types of cryptocurrency hacks:
- Phishing – Cyber criminals send malware-laden fake emails or websites, posing as trusted sources, to trick users into providing their personal and financial information.
- Malware – Malicious software, or malware, can be used to gain access to cryptocurrency wallets.
- Exchange hacks – Cyber criminals use cyber-attacks to gain access to exchange databases, allowing them to steal cryptocurrency.
- 51% attack – This type of attack is launched on a Proof-of-Work consensus platform. It requires the perpetrator to have more than 50% of the computing power necessary for the platform.
What Can You Do to Protect Your Cryptocurrency?
The best way to protect yourself from a cryptocurrency hack is to take steps to secure your private keys and wallets. Here are some steps you can take:
- Keep your crypto wallets safe and secure by using a strong, unique password.
- Only access exchanges or wallets over secure networks. Don’t use public Wi-Fi hotspots to access your wallets.
- Use two-factor authentication or other advanced security measures whenever available.
- Don’t click on suspicious links in emails or messages. Before clicking on any link, make sure it is from a reputable source.
- Don’t use cracked versions of wallet applications or crypto trading software.
3. An Analysis of Recent Blockchain Breaches
Blockchain breaches compromise user data
In 2018, blockchain was first introduced as a revolutionary technology, offering a secure and immutable way to store private data. Since then, the technology has become increasingly relied upon by many organizations and individuals who require secure data storage. Unfortunately, just like any IT system, blockchain is not immune to security issues and breaches.
Recently, there have been several high-profile blockchain breaches reported in the media. For example, in 2019, a security vulnerability allowed hackers to steal over 7 million USD in Ethereum coins from a blockchain platform. In the same year, a report from the Wall Street Journal highlighted a similar security breach which resulted in the loss of 5 million USD worth of Cryptocurrency.
- The breaches demonstrate the risks of insecure systems
- They also highlight the urgent need for better security on blockchain platforms
- And they put user data at risk, weakening consumer confidence
One of the key issues highlighted by these breaches is the importance of secure systems. While blockchain technology has the potential to make data storage more secure, it is up to the platform designers to build systems that are protected against malicious actors. As well as user data being compromised, these breaches also risk damaging consumer confidence in blockchain technology overall.
4. What Can We Learn From These Attacks?
Recent ransomware attacks have revealed some critical lessons in data security. Here are four of the most important lessons from these audits:
- Protect your Data: Companies must invest in methods to protect their data from malicious actors. Encrypting data stored on the cloud or a secure server, using authentication methods like multi-factor authentication, and regularly updating systems with the latest security updates are just a few of the ways to safeguard valuable data.
- Ensure Comprehensive Backup Systems: This is incredibly important to ensure data can be recovered in case of an attack. A backup system should include different types of backups (e.g., onsite, offsite, and cloud) using different methods (sequenced, bootable, and application-specific). The activity should be well-organized and monitored regularly.
- Develop Robust Detection Systems: Having a good detection system is one of the essential elements to mitigate cyberattacks. The system should enable detection of any anomalous or suspicious activity, while preventing false-positive alarms. AI-based attack detection systems should be employed to alert of any new security issues.
- Create a Secure Infrastructure: Having a secure infrastructure ready for any situation is vital. Setting up firewalls, DDoS protection, and IDS/IPS systems are a must for any system. In addition, a strong internal security policy needs to be in place, with regular training for personnel and dedicated teams to address any security issues.
These are just some of the lessons we can take away from the recent ransomware attacks. Companies must proactively take steps to ensure their security posture is as strong as possible. Failure to do so could result in their businesses being crippled by malicious actors.
The boldest blockchain hacks ever have left their mark on the blockchain industry, shaking us out of complacency and reminding us of the need for vigilance. As blockchain technology continues to be implemented and deployed across industries, we must remain wary of the ever-changing security landscape and take steps to ensure our sensitive data is kept from malicious actors.