KiiChain halts after EVM exploit routes funds via Hyperlane to BNB Smart Chain
KiiChain has halted its blockchain after an EVM-module vulnerability allowed an attacker to move funds out of the network using Hyperlane, ultimately transferring them to BNB Smart Chain (BSC). The team says it is tracing the assets with security and infrastructure partners and that the network will remain stopped.
KiiChain has confirmed the cross-chain movement but has not published a verified loss amount, the attacker address, or the number of affected accounts. The incident centers on KiiChain’s Cosmos SDK-based EVM-compatible Layer 1, where Hyperlane was used as the interoperability bridge for the transfer.
The disclosure follows earlier security work: KiiChain shipped a Cosmos EVM hotfix via a v7.3.0 upgrade in July, coordinated with validators after a state-machine-breaking change. A separate Hacken audit in July reviewed the Layer 1 codebase, including EVM-related architecture, and reported multiple findings with some resolved and some accepted.
This incident also lands amid a broader wave of chain-level failures, including MANTRA, BounceBit, and Maya Protocol halts/exploits reported in the same period.
For traders, the immediate risk is related token volatility and cross-chain contagion headlines, while the key datapoints to watch are the eventual verified loss, which EVM function was abused, and whether KiiChain’s v7.3.0 protections fully cover the exploited path.
Bearish
This is a direct security incident: an EVM exploit led to cross-chain fund movement and a full network halt. In prior cases (e.g., other chain halts following dependency/exploit breaches), the immediate market pattern is risk-off trading for the affected ecosystem—spreads widen, holders reduce exposure, and cross-chain bridge narratives can trigger broader de-risking.
Short-term: Expect volatility in KII-related liquidity and any correlated cross-chain/bridge sentiment, with uncertainty around the verified loss amount and affected addresses.
Long-term: If KiiChain can demonstrate effective root-cause analysis (which EVM function/path was abused), prove prior patches were insufficient or fully effective, and resume safely with transparent updates, the impact can fade. But repeated “chain halt” headlines across the sector tend to keep traders more defensive until audits and post-mortems are credible and complete.