> For the complete documentation index, see [llms.txt](https://promethium.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://promethium.gitbook.io/docs/risks/arbitrum-risks.md).

# Arbitrum risks

### Why do we trust Arbitrum?

* **AnyTrust Guarantee**: Arbitrum's design ensures that as long as one honest validator exists, the protocol will execute correctly.
* **Interoperability with Ethereum**: Arbitrum is designed to work seamlessly with Ethereum, which allows it to leverage the security of the Ethereum mainnet.
* **Economic Incentives**: Validators are required to stake funds, which can be slashed if they act maliciously. This provides a strong economic incentive for validators to act honestly.
* **Fraud Proofs**: If a validator submits a false proof, other validators can challenge it by submitting a fraud proof. This mechanism helps to keep validators honest.
* **Time-Locked Withdrawals**: To protect against data withholding attacks, Arbitrum uses time-locked withdrawals. This gives users the opportunity to challenge incorrect state updates.

While there are inherent risks associated with any L2 blockchain, Arbitrum has implemented robust security mechanisms to mitigate these risks and ensure the safety of its network.