The Largest Cryptocurrency Hacks So Far


Cryptocurrencies have become a significant part of the global financial landscape, revolutionizing how we think about money and transactions. However, with the rise of cryptocurrencies, there has also been a surge in cyberattacks and cryptocurrency hacks. These incidents have cost individuals and organizations billions of dollars. In this article, we will explore some of the largest cryptocurrency hacks that have occurred to date.

Mt. Gox – 2014

Mt. Gox was one of the earliest and most infamous cryptocurrency exchanges, based in Tokyo, Japan. In 2014, it filed for bankruptcy after losing approximately 850,000 Bitcoins, valued at around $450 million at that time. The exact cause of the hack remains unclear, with speculation ranging from insider theft to vulnerabilities in the exchange’s software. The aftermath of the Mt. Gox hack led to significant regulatory changes in the cryptocurrency industry.

Bitfinex – 2016

Bitfinex, one of the world’s largest cryptocurrency exchanges, suffered a major security breach in August 2016. The hack resulted in the loss of 120,000 Bitcoins, worth roughly $72 million at that time. Bitfinex decided to spread the losses across all its users and issued BFX tokens to compensate them. Over time, Bitfinex managed to buy back and redeem these tokens, ultimately repaying all affected users.

Coincheck – 2018

In January 2018, Coincheck, a Japanese cryptocurrency exchange, fell victim to a hack that resulted in the theft of 523 million NEM tokens, valued at approximately $534 million. This breach is considered one of the largest cryptocurrency thefts in history. Coincheck has since improved its security measures and reimbursed affected users, but the incident highlighted the need for enhanced security across the cryptocurrency industry.

Binance – 2019

Binance, one of the world’s leading cryptocurrency exchanges, faced a security breach in May 2019. Hackers stole 7,000 Bitcoins, valued at around $40 million at the time. The swift response of the Binance team, along with the use of their SAFU (Secure Asset Fund for Users), ensured that no users suffered financial losses. Binance improved its security measures further to prevent such incidents in the future.

KuCoin – 2020

In September 2020, KuCoin, a Singapore-based cryptocurrency exchange, disclosed a security breach that resulted in the loss of over $280 million worth of cryptocurrencies. The hack affected numerous tokens, and KuCoin’s quick response included freezing the stolen assets and collaborating with other exchanges to trace the stolen funds. KuCoin has since enhanced its security infrastructure and continued to operate with increased transparency.

Poly Network – 2021

Poly Network, a decentralized finance (DeFi) platform, experienced one of the most audacious cryptocurrency hacks in August 2021. Hackers exploited a vulnerability in Poly Network’s code, making off with approximately $610 million in various cryptocurrencies. In an unusual turn of events, the hackers returned the funds voluntarily after negotiations with the Poly Network team, highlighting the complexity of the cryptocurrency world.

DeFi Exploits – Ongoing

Decentralized finance (DeFi) protocols have seen an explosion in popularity, but they have also become prime targets for hackers due to their complex smart contracts. Numerous DeFi platforms have suffered exploits and hacks, resulting in the loss of millions of dollars. These incidents underscore the need for rigorous security audits and ongoing vigilance within the DeFi ecosystem.

DAO Hack – 2016

The DAO (Decentralized Autonomous Organization) was an ambitious Ethereum-based project that raised over $150 million through an initial coin offering (ICO) in 2016. However, a vulnerability in its code allowed an attacker to drain one-third of the funds, resulting in a contentious hard fork of the Ethereum blockchain. This event ultimately led to the creation of Ethereum Classic, a separate blockchain that preserved the stolen funds.

BitThumb – 2017

In June 2017, BitThumb, one of South Korea’s largest cryptocurrency exchanges, suffered a security breach that resulted in the theft of personal information from over 30,000 users. While the hackers didn’t steal cryptocurrencies directly, the incident highlighted the importance of safeguarding user data in the cryptocurrency ecosystem.

Parity Wallet – 2017

Parity, a popular Ethereum wallet provider, experienced a critical vulnerability in July 2017. A user accidentally triggered a bug in the Parity multi-signature wallet code, locking up approximately 513,000 Ether (worth around $160 million at that time). Despite multiple efforts to resolve the issue, the funds remain frozen to this day, serving as a cautionary tale for the importance of code audits and security measures.


The history of cryptocurrency is riddled with high-profile hacks and security breaches, highlighting the need for robust security measures and constant vigilance within the industry. While cryptocurrency technology continues to evolve, so do the methods of hackers and cybercriminals. As the cryptocurrency ecosystem matures, it is crucial for exchanges, wallet providers, and DeFi platforms to prioritize security and implement stringent measures to protect users and their assets. Additionally, regulatory bodies are increasingly stepping in to create a more secure environment for cryptocurrency trading and investment, with the goal of preventing such massive hacks in the future.

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FAQ 1: How do I keep my cryptocurrencies safe from hackers?

To safeguard your cryptocurrencies, store them in offline wallets, use strong passwords, and enable two-factor authentication on your accounts.

FAQ 2: What caused the FTX exchange bankruptcy?

The FTX exchange’s bankruptcy resulted from commingling user assets with those of Alameda Research, causing a liquidity crisis.

FAQ 3: Why are cryptocurrency exchanges targeted by hackers?

Cryptocurrency exchanges are lucrative targets for hackers due to the potential for large-scale theft of digital assets

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