Understanding Blockchain Security: A Look at Recent Security Incidents and Best Practices to Avoid Them
Explore recent blockchain security incidents and learn best practices for safeguarding your projects. This post covers auditing, real-time fraud prevention, user education, and lessons from past breaches to help create a secure blockchain ecosystem
Much of the HYDN team worked extensively in traditional cybersecurity before moving to blockchain security, and that background is why we take strong security measures so seriously. Blockchain applications such as DApps, Tokens, DeFi protocols and NFTs change quickly and hold high-value crypto assets, which makes them prime targets for malicious actors. This article looks at some recent security incidents and at how to strengthen the security of your blockchain projects.
A recap of recent security incidents
2023 hasn’t started particularly well for blockchain security. Over $320 million worth of assets was stolen in the crypto industry through a variety of incidents in the first quarter of 2023. That is lower than the losses in previous quarters, but it is still a substantial sum. Reports have suggested that off-chain events, such as issues with Silvergate Bank and the depegging of USDC, might have had a broader impact on the crypto industry. Even so, hackers continued to exploit vulnerabilities in DApps.
Of the funds stolen in the quarter, over $31 million was lost to 90 exit scams, while more than $222 million was lost in 52 flash loan and oracle manipulation exploits. Ethereum had the largest loss, at over $221 million, while BNB Chain had the highest number of incidents, with 139 in total.
The Euler Finance hack in March 2023, where hackers exploited a flash loan to access over $195 million, accounted for 60% of the funds lost in Q1 2023. Euler Finance managed to recover around 90% of the lost funds through negotiations with the hacker. Recovering funds this way has become increasingly common in the crypto industry.
Building security into your blockchain project
Given these risks, the safety of blockchain platforms and assets should be a top priority for everyone in the industry. Here are some best practices to consider.
Regular smart contract audits
Regular auditing of smart contracts can identify vulnerabilities before they are exploited. The audit should be done by a reputable third-party expert so that you get an unbiased view of the contract’s security.
If you’re interested in getting a Smart Contract Audit from HYDN, head over to our audit page.
Web3 penetration testing
Web3 penetration testing simulates real-world attack scenarios to identify weaknesses in your platform’s infrastructure. HYDN’s Web3 penetration testing experts will help you uncover and remediate vulnerabilities in your DeFi platform before they can be exploited.
Get a Web3 Penetration Test from HYDN today.
Real-time fraud prevention
Real-time fraud prevention measures detect and mitigate risks as they occur. For instance, monitoring for suspicious transaction patterns can identify security threats and deal with them before they cause substantial losses. HYDN has gone a step further by building the HYDN Prevent execution engine, which proactively stops threats where competing products only detect and alert.
HYDN Prevent is our real-time fraud prevention product for DeFi. It analyzes every transaction that interacts with your dApp’s smart contracts, identifying and blocking malicious ones, with no impact on the user journey of legitimate users. It has over 100 detectors covering common attack vectors such as Reentrancy Attacks, Oracle Manipulation, Phishing Attempts, Contract Impersonation, Role Changes, and more, so it can detect and prevent almost all attacks in real time, saving your dApp millions.
Get more info about HYDN Prevent.
User education
Educating users about risks and best practices also helps. This includes teaching them about phishing attacks, the importance of using secure wallets, and the need to verify the authenticity of tokens and DApps before interacting with them.
Learning from past incidents
Past security incidents, and how they were resolved, are a useful guide. For instance, the recent trend of recovering stolen funds through negotiations with hackers shows why you should have response plans in place, including communication strategies and contingency funds.
The blockchain industry moves quickly, so security has to be proactive. Regular audits, real-time fraud prevention, user education and lessons from past incidents together can significantly reduce the risk of a breach.
Security belongs in the process from the start, and should not be left until after launch.
