Cryptocurrency is a hot commodity right now, and with great value comes great risk. Unfortunately, that means that cryptocurrencies are often the target of hackers. Today we will look at the top five biggest hacks in the history of crypto. Note that this article is not to scare you away from crypto, but rather to educate you on what's going on so that you're informed.
Introduction
Cryptocurrency has been around for quite some time now, and with its meteoric rise and value, it's no surprise that hackers have taken an interest in it as well. In 2021 alone, a series of hacking attacks, exploits, and arbitrage caused the loss of more than two billion dollars in cryptocurrency. In total, billions more have been lost to a string of hacking attacks that exploit vulnerabilities within the network's security system. Over the years, crypto exchanges, D5 protocols, and cross-chain bridges have a huge target on their backs since they custody a lot of funds. Opportunistic hackers constantly scan platforms and smart contracts for vulnerabilities. If they get lucky, they transfer users' cryptocurrencies to their own wallets, sometimes without the platform's knowledge.
In this article, we're going to take a look at the top cryptocurrency hacks in history. We'll answer questions about how the attacks took place, the steps taken to recover lost funds, whether customers received their money back, and how the company or project is currently doing. These are the most expensive hacks yet, some of which resulted in millions of dollars worth of losses.
- Ronin Network Hack
In March 2022, Ronan Network, an Ethereum-linked sidechain that powers Axie Infinity, a popular game in which players battle with pets called axes to earn cryptocurrencies and NFTs, was hacked. The network lost a total of $624 million in the form of 25.5 million USDC and 173,600 ETH, making it the most expensive crypto hack of all time. Reports claim that the hacker transferred $540 million worth of cryptocurrency to their wallet. However, Ronin Network only realized the missing cryptocurrency six days later when a customer reported that they couldn't withdraw 5000 E, which was $17 million at the time.
According to the Ronin Network, the hacker forged two withdrawals using hacked private keys. Before the attack, the network had nine validator nodes. To make a valid transaction, you'd need five out of nine validator signatures. According to Ronin Network's report, the hacker discovered a backdoor via Ronan's gas-free remote procedure call (RPC) node, which they used to gain control of the five validator private keys required to make withdrawals.
In response to the attack, Ronin Network increased the number of validator nodes from five to eight. They stopped all transactions on the network and disabled exchanges like Finance and Katana DEX from transacting with the network. As a result, the hackers had few ways to move this stolen cryptocurrency from their wallet and convert it to actual cash. Ronin Network is currently working with forensic cryptographers, investors, and government agencies to find those responsible for the attack. At the moment, they claim the stolen funds to still be in the hacker's wallet. Ronan has also suspended all network transactions and claims that all stolen funds will be recovered and reimbursed to its customers in the future.
- Paulie Network Hack
Coming in as the second-largest hack in history is last year's August 2021 Paulie Network attack, valued at $611 million in stolen funds. Poly Network is a cross-chain bridge that enables transfers of assets between different blockchains by locking and unlocking tokens on either side of the bridge. Poly network allows users to seamlessly convert their tokens to another currency.
The responsible parties accountable. In conclusion, while cryptocurrency can be a great investment opportunity, it is important to be aware of the risks involved. As demonstrated by these top five cryptocurrency hacks, even the most secure platforms can fall victim to hacking attacks. However, it is also important to note that many companies and projects have taken steps to improve their security measures and recover lost funds. By staying informed and being vigilant, investors can mitigate their risks and safely invest in cryptocurrencies.
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