The Great Crypto Heists continue to shape the digital frontier of cryptocurrency, a landscape that offers innovation and financial freedom but also harbours significant security risks. Despite evolving into a multi-trillion-dollar asset class, the crypto industry still struggles with vulnerabilities that malicious actors exploit, leading to staggering losses.
Recent years have witnessed some of the most audacious cyber heists in the history of cryptocurrency, with losses accumulating to billions of dollars. Here, we explore the most significant breaches that have not only led to financial losses but also to a reevaluation of security protocols within the crypto space.
In February 2025, the Dubai-based centralized exchange Bybit fell victim to the largest crypto hack ever recorded, with over 400,000 Ethereum tokens—valued at approximately $1.4 billion—stolen from its cold wallet. The breach was orchestrated through a sophisticated manipulation of a planned transfer, ultimately deceiving the exchange into sending funds to an attacker's wallet. This incident has been linked to North Korea’s notorious Lazarus Group, which, as many experts note, is known for its extensive cybercriminal activities.
Despite the scale of the theft, Bybit managed to mitigate the impact on its users by swiftly processing all withdrawals and replenishing the stolen Ethereum through loans, deposits, as well as asset purchases. Thus, this incident underscores the ongoing challenges and risks within even the most secure platforms in the crypto industry.
The Poly Network, a protocol facilitating transactions across different blockchains, experienced a significant security breach in 2021, losing about $611 million in various cryptocurrencies. The network's quick response and the peculiar benevolence of the hacker, who returned nearly all the funds, turned what could have been a devastating event into a less harmful one. This incident highlighted the vulnerabilities associated with cross-chain transactions and the importance of robust security measures.
In a sophisticated attack on the BSC Token Hub of the BNB Chain in October 2022, a hacker managed to mint 2 million new Binance Coin (BNB) tokens worth approximately $570 million. The quick identification and response by the chain's validators prevented the majority of these funds from being irrevocably lost, showcasing the critical role of active network monitoring and rapid incident response.
The 2018 attack on Japanese exchange Coincheck remains one of the most significant heists, with $530 million worth of NEM tokens stolen from a hot wallet. This breach notably affected over 260,000 users and, in turn, sparked a global conversation about the security practices of crypto exchanges, especially regarding the use of hot versus cold wallets.
The Ronin Network, an Ethereum sidechain for gaming, lost $552 million in March 2022 due to compromised validator keys, which, in turn, was again linked to North Korea’s Lazarus Group. Thus, the delayed detection of this breach exposed the dangers of insufficient validator security and ultimately highlighted the need for enhanced protective measures in blockchain infrastructures.
The recurring theme of these hacks—sophisticated methods, high-profile targets, and substantial losses—highlights the imperative for continuous advancement in cybersecurity within the crypto industry. Thus, as these digital platforms become more integrated into global finance, the stakes for security will only increase.
For those navigating careers in blockchain and cybersecurity, these incidents underscore the critical need for expertise in digital asset protection. In fact, as the industry evolves, so too does the demand for professionals who can preempt, mitigate, and quickly respond to cyber threats. The role of cybersecurity in crypto recruitment is more pivotal than ever, which is why skilled professionals who can navigate and fortify the complex landscape of digital currencies are in high demand. Ultimately, their expertise will shape the future of secure digital transactions.
For further insights into the evolving world of blockchain and the pivotal role of cybersecurity, explore our detailed discussions on blockchain's impact on various industries and the challenges of Web3 recruitment.Daily Debrief NewsletterStart every day with the top news stories right now, plus original features, a podcast, videos, and more.