A hacker who stole $27 million from the Penpie protocol on September 3 has laundered approximately $7 million of the stolen funds through the crypto mixer Tornado Cash within just 12 hours. The breach highlights significant security risks in decentralized finance (DeFi) systems.
Web3 security firm Cyvers reported on September 4 that 26% of the stolen funds were funneled through Tornado Cash addresses. Blockchain security firm PeckShield confirmed that the hacker continues to move the stolen funds through multiple transactions.
Following the attack, the {Penpie} (PNP) protocol suspended all deposits and withdrawals. The attack began at 17:45 UTC when the hacker deployed the initial contract used in the breach. Decentralized finance protocol Pendle responded by halting all contracts, effectively preventing further theft and safeguarding $105 million that could have been at risk. Pendle's contracts were safely reactivated at 00:50 UTC on September 4 after thorough checks.
The rise in cyberattacks targeting cryptocurrencies and DeFi platforms is a growing concern. An Immunfi report released on August 29 revealed that over $1.2 billion has been stolen in hacks and exploits in 2024, marking a 15.5% increase from the previous year.
The FBI also issued a warning on September 3 about North Korean cybercriminals targeting DeFi and cryptocurrency firms through sophisticated social engineering tactics. The month of August alone saw significant losses, with security firm PeckShield reporting over $313 million in stolen funds, including $238 million in Bitcoin and $55 million in Dai.
In a separate incident, India's WazirX exchange suffered a major cyberattack in July, resulting in a loss of $234.9 million. The exchange has begun a phased plan to restore operations and is pursuing legal action in Singapore. As of September 3, WazirX has allowed users to withdraw up to 66% of their Indian rupee balances.
These incidents underscore the pressing need for enhanced security measures in the rapidly evolving DeFi space.