---
title: "Discussion on \"The One With a Side Entrance\" | Hashnode"
description: "Discussion on \"The One With a Side Entrance\". A subtle accounting bug where deposits and repayments blur — letting attackers slip in through a “side entrance”."
url: "https://hashnode.com/posts/episode-4-side-entrance/6918957895069895fa41b212"
---

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# [The One With a Side Entrance](https://kode-n-rolla.hashnode.dev/episode-4-side-entrance?utm_source=hashnode&utm_medium=feed)

A subtle accounting bug where deposits and repayments blur — letting attackers slip in through a “side entrance”.

Nov 15, 2025 · 10 min read · kode-n-rolla.hashnode.dev  
Updated Feb 16  
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-   [#solidity](https://hashnode.com/tag/solidity)
-   [#damn-vulnerable-defi-v4](https://hashnode.com/tag/damn-vulnerable-defi-v4)
-   [#web3security](https://hashnode.com/tag/web3security)
-   [#securityresearch](https://hashnode.com/tag/securityresearch)

## Written by

[Pavel Eigensinn](https://hashnode.com/@kode-n-rolla)

@kode-n-rolla · Blockchain

  
[View profile](https://hashnode.com/@kode-n-rolla)

kode-n-rolla

Security Researcher & Rust/Solana Engineer. I focus on DeFi security, auditing smart contracts, and analyzing protocol/blockchain vulnerabilities. My goal: Bridging the gap between offensive research and building secure, production-grade systems.

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