---
title: "Comment by Fabio Sarmento on \"Preventing Denial of Service Attacks in Smart Contracts: Implementing the Withdrawal Pattern\" | Hashnode"
description: "Could you elaborate on how specific coding patterns can be used to mitigate the risk of a single failure blocking all withdrawals? Are there best practices for"
url: "https://hashnode.com/posts/preventing-denial-of-service-attacks-in-smart-contracts-implementing-the-withdrawal-pattern/67dd7bb9cf09a070e54cd8e9/comment/69beb671c1b8caff8d7765a7"
---

[Discussion](https://hashnode.com/posts/preventing-denial-of-service-attacks-in-smart-contracts-implementing-the-withdrawal-pattern/67dd7bb9cf09a070e54cd8e9)

Comment [Preventing Denial of Service Attacks in Smart Contracts: Implementing the Withdrawal Pattern](https://hashnode.com/posts/preventing-denial-of-service-attacks-in-smart-contracts-implementing-the-withdrawal-pattern/67dd7bb9cf09a070e54cd8e9)

[Fabio Sarmento](https://hashnode.com/@sarmento)

[Mar 21](https://hashnode.com/posts/preventing-denial-of-service-attacks-in-smart-contracts-implementing-the-withdrawal-pattern/67dd7bb9cf09a070e54cd8e9/comment/69beb671c1b8caff8d7765a7)

Could you elaborate on how specific coding patterns can be used to mitigate the risk of a single failure blocking all withdrawals? Are there best practices for structuring these functions to avoid such vulnerabilities, especially when dealing with external contract interactions?

[Favour Ajaye](https://hashnode.com/@blockchaindeveloper)

[Apr 8](https://hashnode.com/posts/preventing-denial-of-service-attacks-in-smart-contracts-implementing-the-withdrawal-pattern/67dd7bb9cf09a070e54cd8e9/comment/69beb671c1b8caff8d7765a7#reply-69d6e073707c1ce7688f5923)

Hmm... I might have to write an article on this for more elaboration. Thank you