
Volo Protocol, a decentralized finance protocol built on the Sui blockchain, has suffered a security breach that led to the loss of approximately $3.5 million in digital assets.
In an effort to maintain transparency, the team in an X post on Wednesday publicly announced the security breach. According to the team, the attack only affected assets in selected vaults, including Wrapped Bitcoin (WBTC), Matrixdock Gold XAUm, and USDC (USDC).
On detecting the breach, the team said it acted quickly to contain it and minimize further damage. It stated, “We detected the attack, immediately notified the Sui Foundation and ecosystem partners to contain the damage, and froze the vaults to prevent any further exposure.”
As of the time of its first reporting on the incident, the Volo team said that the $28 million in total value locked across other vaults was safe, adding that all vaults on the protocol were temporarily frozen pending a full postmortem and remediation. The team also said it was in damage control mode and was actively working with on chain investigators and ecosystem partners to recover the stolen funds.
Since the hack happened, the Volo team has, in three separate updates, transparently informed the community about the efforts being made to recover the stolen funds.
In the first two updates, the team said it was already working with ecosystem partners and had successfully frozen approximately $500 million of the stolen funds, while also intercepting and blocking the hacker’s attempt to bridge 19.6 WBTC. According to the Volo team, these funds were no longer under the hacker’s control.
In a third update, the team said it had already frozen $2 million of the stolen funds, and that together with ecosystem partners and security teams, it had flagged the hacker’s EVM addresses across the majority of centralized exchanges, swappers, and KYC tools.
The Volo protocol hack came shortly after the KelpDAO exploit and the Drift Protocol exploit, which led to a combined loss of over $570 million, and are currently the largest DeFi hacks that have occurred this year. So far, over $770 million has been lost to DeFi hacks this year.

The Solana Foundation, in collaboration with blockchain security firm Asymetric Research, has launched new security initiatives aimed at strengthening the security of the Solana network.
In a blog post on Monday, the foundation announced the launch of new security initiatives designed to provide an extra layer of protection for protocols built on the network. Among these initiatives are STRIDE, a security framework, and SIRN, a network of security firms focused on protecting the Solana ecosystem.
STRIDE, which stands for Solana Trust, Resilience and Infrastructure for DeFi Enterprises, is a structured security framework and program launched by the Solana Foundation. It is aimed at evaluating, monitoring, and escalating security across all projects built on the Solana network.
The STRIDE framework is built on eight key pillars: program security, governance and access control, oracle and dependency risk, infrastructure security, supply chain security, operational security, monitoring and incident response, and log management and forensics.
These pillars will be used by the foundation’s partner, Asymmetric Research, to evaluate the security strength of all protocols on the Solana blockchain. Protocols with a total value locked of more than $10 million that pass the STRIDE evaluation will receive continuous operational security and active threat monitoring, funded by Solana Foundation grants. The higher the evaluation result, the greater the level of protection and funding they will receive.
Protocols with a total value locked of more than $100 million that pass the STRIDE evaluation will also receive, in addition to grants, formal fund verification. The foundation describes this as a mathematical, proof based method that exhaustively guarantees the correctness of smart contracts.
The findings of the STRIDE framework will be published publicly. According to the foundation, this is intended to give users and investors insight into the protocols they use and rely on.
Among the initiatives launched by the Solana Foundation is SIRN, short for Solana Incident Response Network, a network of security firms that will respond and act in the event of a security incident.
Although SIRN will be available to all blockchain protocols on the Solana network, priority will be given to protocols with higher total value locked, similar to the additional benefits that protocols with higher total value locked will receive under the STRIDE program.
Interested in knowing who makes up SIRN?
The Solana Incident Response Network comprises Asymmetric Research, OtterSec, Neodyme, Squads, and ZeroShadow, a combination of cybersecurity firms that includes Web3 and traditional security firms as well as a smart contract auditing firm.
The programming initiatives launched by the Solana Foundation are in response to the over $280 million attack on Drift Protocol, the largest decentralized perpetual exchange on the Solana blockchain. The attack is, so far, the most devastating DeFi attack this year and the second largest in the history of the Solana blockchain, following the 2022 Wormhole attack, which resulted in losses exceeding $325 million.
Step Finance, a DeFi aggregator built on Solana, was also affected by a DeFi hack earlier this year, which led to losses of about $40 million. According to DeFiLlama, over $168 million was stolen across 34 blockchain protocols in the first quarter of this year, prior to the Drift incident.
