# On Delay Attacks

**URL:** <https://research.arbitrum.io/t/on-delay-attacks/744>\
**Category:** Uncategorized\
**Created:** [December 29, 2022, 2:26pm UTC](https://research.arbitrum.io/t/on-delay-attacks/744 "2022-12-29T14:26:55Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![augusto](https://avatars.discourse-cdn.com/v4/letter/a/3e96dc/32.png) [@augusto](https://research.arbitrum.io/u/augusto)\
**Post date:** [December 29, 2022, 2:26pm UTC](https://research.arbitrum.io/t/on-delay-attacks/744/1 "2022-12-29T14:26:55Z")

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Congratulations on the recent development by Arbitrum’s team on tackling the [Delay Attack on Rollups](https://offchain.medium.com/solutions-to-delay-attacks-on-rollups-434f9d05a07a).

Cartesi is another Optimistic Rollups solution that has also been researching this same problem. And given the broader interest on the issue, we’ve decided to published a preliminary version of our permissionless validator solution on [arXiv](https://arxiv.org/pdf/2212.12439). We hope it can add to Arbitrum’s work on the issue.

We at Cartesi are excited to connect with anyone who’s interested in discussing this topic.