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The hacks since 2022 reveal that the industry’s security problem extends far beyond smart contract vulnerabilities.
But what is eye-catching here is that these hacks did not happen because they broke ‘a single line of code. ’ According to CoinBureau,, which took place in February 2025.
In this exploit, the hackers compromised a developer’s computer and manipulated what was displayed on the screens of Bybit employees. Though the transaction appeared legitimate on the surface, the underlying transaction redirected roughly 401,000 ETH to the attackers. After the investigation, the FBI linked the attack to North Korea’s TraderTraitor group. Well, this was a social-engineering and infrastructure-compromise attack, rather than simply finding a bug in Bybit’s blockchain code.
, which followed a similar pattern and drained $625 million. Instead of breaking the blockchain itself, attackers compromised five of nine validator keys. In this, the initial access reportedly came through a fake job offer sent to an employee. Other attacks involved genuine technical loopholes.
For instance, in the BNB Chain exploit, attackers compromised a flaw in the bridge’s proof-verification system to drain approximately 2 million BNB. Meanwhile, in the Wormhole hack, a vulnerability in the code allowed an attacker to mint around 120,000 wrapped ETH without providing the required collateral. These attacks fell into the category of traditional smart-contract vulnerabilities.
Then there were attacks that involved multisig systems, centralized exchanges, and third-party providers. The biggest being the the FTX attack, which reportedlyGiven all these cases, the U.S. authorities and blockchain-analysis firms have already attributed numerous major crypto thefts to North Korean-linked groups such as Lazarus and TraderTraitor. These groups are known for commonly using fake employment opportunities, malware, phishing, and social engineering to obtain access before moving stolen cryptocurrency through multiple networks.
While smart contract exploits accounted for 125 cases, three-quarters of stolen funds came from compromised keys, custody systems, and signing infrastructure. AltcoinAMBCrypto was founded in 2018 with a mission to simplify and bring the latest blockchain and cryptocurrency news to our readers. We have quickly grown into the digital news source for an emerging generation of cryptocurrency enthusiasts, reaching more than a million readers on a monthly basis, across the globe.
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