Kiln has reported a safety incident! 1.6 million ETH have exited the validators, and the number of exit queues has surged by 700,000.

Solana API vulnerability affects SwissBorg, Kiln urgently withdraws Ethereum validators, market panic but funds remain safe.

Breaking: Kiln has proactively exited all ETH validators for security reasons.

Blockchain infrastructure provider Kiln has announced that it has begun to sequentially exit all of its Ethereum (ETH) validators due to the discovery of potential security risks. This action affects approximately 1.6 million ETH of staked assets and has caused the Ethereum exit queue to surge to 700,000 ETH.

According to Ethereum's PoS protocol “churn limit” design, a maximum of 1,792 ETH can exit per epoch (approximately 6.4 minutes) to avoid impacting network stability. This means that the exit procedure for Kiln will take several weeks, with an estimated time of 10 to 42 days, depending on the number of validators and network congestion.

Safety first! The incident originated from a Solana API leak, and SwissBorg is the victim.

This decision is Kiln's expanded response to a recent security incident on the Solana network. According to SwissBorg's incident report (September 9, 2025), hackers exploited a vulnerability in Kiln's API to steal approximately $41 million in SOL, directly affecting the SwissBorg platform. Although there are currently no signs indicating that the Ethereum network itself has been affected, Kiln stated that it is collaborating with multiple security companies to prevent further losses and has decided to proactively withdraw from ETH validators, suspend certain services, and strengthen its infrastructure.

User assets are still safe, and withdrawals will be processed according to the network schedule.

Kiln emphasized in an official statement that user assets have not been harmed, and the withdrawn ETH will be processed according to Ethereum network regulations after the validators exit (which may take up to an additional 9 days). Furthermore, during the exit process, validators can still earn staking rewards, ensuring that user interests are not significantly affected.

Kiln co-founder and CEO Laszlo Szabo stated: “As soon as we detect potential risks, we immediately take action, and withdrawing validators is a responsible way to protect users.” Co-founder Ernest Oppetit added: “We will continue to provide transparent updates until the withdrawal process is fully completed.”

Why is the exit so slow? Explanation of Ethereum's “Churn Limit” mechanism

The exit queue for 700,000 ETH has raised concerns among many users about whether the withdrawal speed is too slow. In fact, this is part of the Ethereum PoS design, aimed at preventing on-chain congestion or price fluctuations during large-scale unstaking.

The Ethereum protocol stipulates that a maximum of about 1,792 ETH can be withdrawn per epoch. Therefore, even if Kiln applies to withdraw all validators at once, it will still require scheduling time for processing, which is why the overall process is estimated to take more than a month.

Will large-scale unstaking lead to an ETH crash?

Although 1.6 million ETH sounds impressive, market analysts believe that this exit will not cause significant selling pressure. According to AInvest's third quarter analysis report, there are currently about 3.61 million ETH (accounting for 29% of the circulating supply) staked on the entire Ethereum network, generating an annualized return of approximately 89.25 billion USD.

Analysis indicates that Kiln is likely to re-stake the exited ETH to new validator keys, rather than selling for cashing out, showing that this move is primarily for security considerations, rather than for fund relocation.

Kiln promises to release a complete event report.

Kiln indicates that it is actively conducting a comprehensive infrastructure review and reinforcement operations, temporarily closing some services, and committing to release a complete incident analysis report once the investigation is completed. According to Kiln's self-introduction, its infrastructure features a multi-cloud architecture, cross-region deployment, certification through SOC 2 Type 2, and supports tens of thousands of validators, making it one of the leading institutional-grade staking solution providers.

This incident once again reminds us of the “trustless is secure” principle in the blockchain world, indicating that even the most seasoned institutions find it difficult to completely avoid potential risks. However, Kiln's decisive response and transparent communication have provided some stability to the market. After short-term fluctuations, ETH prices have gradually stabilized, showing that the market tends to believe this action is a preventive measure. In the coming weeks, investors will closely monitor the follow-up review results from Kiln and the final movements of this batch of 1.6 million ETH.

This article reports a shocking security incident with Kiln! 1.6 million ETH have exited the validators, with the exit queue surging by 700,000. It first appeared on Chain News ABMedia.