Taiko, an Ethereum-equivalent rollup, lost approximately $1.7 million on Monday after an attacker compromised its chain-state verification mechanism. The exploit adds to a growing list of crypto hacks in June 2026, which has already seen over 20 incidents. Taiko settles its transactions on Ethereum mainnet, and the attack targeted a flaw in the verification process that allowed the attacker to manipulate state data. The team has paused operations to investigate and secure the network. This incident highlights ongoing security challenges in the rollup ecosystem, particularly for chains relying on optimistic or equivalent verification. Users are advised to monitor official channels for updates.

Key facts

• Taiko lost $1.7M in a chain-state verification exploit on Monday.
• Attack compromised the verification mechanism of the Ethereum-equivalent rollup.
• June 2026 has seen over 20 crypto hacks, with Taiko as the latest.
• Taiko paused operations to investigate and secure the network.
• The exploit highlights security risks in rollup verification systems.

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