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Co-authored-by: Moritz Hoffmann <clonker@gmail.com>

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+---
+title: 'Underhanded Solidity Contest 2024'
+date: '2024-07-31'
+author: Vishwa Mehta
+category: Announcements
+---
+
+The [Underhanded Solidity Contest](https://underhanded.soliditylang.org/) is back with a bang in 2024!
+
+After two successful seasons of the contest in [2020](https://underhanded.soliditylang.org/2020) and [2022](https://underhanded.soliditylang.org/2022/) inspired by the first edition in [2017](https://weka.medium.com/announcing-the-winners-of-the-first-underhanded-solidity-coding-contest-282563a87079), we’re back with an exciting challenge for this year.
+
+Before we dive into the 2024 theme, let's do a quick refresher on what the Underhanded Solidity Contest is.
+
+The Underhanded Solidity Contest is about writing seemingly innocent code that has malicious mechanisms or hidden backdoors. Through this contest, we aim to:
+
+- Raise awareness about smart contract security
+- Uncover language design faults
+- Battle-test recently introduced language features and restrictions
+- Highlight anti-patterns in smart contact development
+- Establish new best practices for secure smart contract development
+
+With that said, let's dive head first into this year’s contest info, coding brief, deadlines, judges, prizes, and more!
+
+## Theme: Transient Storage 💾
+
+Based on this year’s theme, the participants are tasked with the challenge to develop smart contracts that leverage transient storage ([EIP-1153](https://eips.ethereum.org/EIPS/eip-1153)).
+
+Transient storage is as cheap as warm storage access with both reads and writes priced at 100 gas. It is well-suited for use-cases such as cheap re-entrancy locks.
+
+The aim of USC 2024 is to showcase a transient storage use-case in a way that looks legitimate but contains a hidden vulnerability or manipulation mechanism in the implementation facilitated by the use of transient storage.
+
+*Note:* The compiler does not yet allow using transient as a data location in high-level Solidity code. For the time being, data stored in this location can only be accessed using the `TSTORE` and `TLOAD` opcodes in inline assembly.
+
+## The Judges ⚖️
+
+Like every year, judges will be presented with anonymised submissions. This year, the submissions will be assessed by:
+
+* [Anton Permenev](https://twitter.com/a_permenev) - Senior Engineer at ChainSecurity
+* [Goncalo Magalhaes](https://x.com/realgmhacker) - Head of Security at Immunefi
+* [Gonçalo Sá](https://twitter.com/GNSPS) - Co-founder, ConsenSys Diligence & Creed
+* [Hadrien Croubois](https://x.com/amxx) - Smart Contract Engineer at OpenZeppelin
+* [Harikrishnan Mulackal](https://x.com/_hrkrshnn) - Co-founder, Spearbit
+* [Patrick Collins](https://x.com/PatrickAlphaC) - Co-founder, Cyfrin Audits
+* [samczsun](https://twitter.com/samczsun) - Research Partner at Paradigm
+* [aleph_v](https://x.com/alpeh_v) - Independent Security Researcher
+
+### Judging Criteria ☑️
+
+Our judges award scores to the submissions that especially shine in the following aspects of the contest:
+
+- **Simplicity & Conciseness**: Since it's much easier to hide a vulnerability in complex and poorly written code, short and clean submissions will be scored higher than those that are lengthy and complicated.
+- **Plausibility**: Code that contains backdoors without any clear reason why will look immediately suspicious, no matter how cleverly written the flaw is. Consider using creative yet realistic scenarios.
+- **Originality**: We value uniqueness and originality. Truly original ideas will receive more points than submissions that make use of already well known vulnerabilities.
+
+## The Prizes 🏆
+
+As a token of appreciation for the hard work and creativity that goes into the submissions, we have prepared a few prizes for the winners and participants:
+
+* The first place will receive a ticket to [Devcon SEA 2024](https://devcon.org/en/).
+* The top 3 submissions will receive a ticket to the next Solidity Summit (date & location TBA).
+* Furthermore, the three winners will be added to the Board of Fame.
+* All qualified submissions receive a custom USC 2024 t-shirt.
+
+## The Submission 📨
+
+Before submitting your code ensure that:
+
+- The entirety of your submission is licensed under an open-source license.
+- In your submission you use Solidity v0.8.24 or newer.
+- You have carefully read the [Coding Brief](https://underhanded.soliditylang.org/#coding-brief).
+
+Please email your submissions before the deadline [2024-08-31, 11:59PM UTC] to `sol_underhanded@ethereum.org`. Entries should consist of a ZIP file containing a README describing your submission and how it works, a separate file for spoilers, and one or more Solidity files.
+
+Each person can only enter one submission. If you want to make a team submission, nominate a single person to submit on your team's behalf. Since entries will be forwarded to the judges and assessed anonymously, please do not include identifying information in the ZIP file.
+
+## Contest Timeline ⏳
+
+- Submissions open: 2024-07-31
+- Submissions close: 2024-08-31
+
+Winners will be announced in time before [Devcon South-east Asia 2024](https://devcon.org/en/).
+
+## The Board of Fame ⭐
+
+We maintain a [Board of Fame](https://underhanded.soliditylang.org/#board-of-fame) in order to honor all our winners of previous Underhanded Solidity Contests. Consider checking out previous submissions from [2022](https://github.com/ethereum/solidity-underhanded-contest/tree/master/2022/submissions_2022) and [2020](https://github.com/ethereum/solidity-underhanded-contest/tree/master/2020/submissions_2020) (especially the top 3) for inspiration and submission best practices.
+
+## The Supporters 💖
+
+Last but not least, we'd like to extend our thanks to all the judges for their support in organizing this contest!
+
+Should you have any questions or encounter problems please feel free to reach out to us via `sol_underhanded@ethereum.org` or join the Solidity [Matrix](https://matrix.to/#/#ethereum_solidity:gitter.im) / [Gitter](https://gitter.im/ethereum/solidity) channel.