---
id: 1873
title: "Preventing Directory Traversal Attacks: Techniques and Tips for Secure File Access"
source_domain: hackerone.com
source_url: "https://www.hackerone.com/blog/preventing-directory-traversal-attacks-techniques-and-tips-secure-file-access"
published_at: "2024-02-26T23:48:13Z"
tags: ["web-security", "path-traversal", "hackerone", "input-validation", "file-access", "directory-traversal", "allowlist"]
phying_url: "https://phying.com/item/1873"
lang: en
---

# Preventing Directory Traversal Attacks: Techniques and Tips for Secure File Access

## Summary

HackerOne explains how directory traversal via ../ sequences reaches files outside the web root, and walks through mitigations: strict validation, allow lists, and framework protections.

## Intelligence Metadata

- **Sources:** hackerone.com
- **Published:** 2024-02-26T23:48:13Z
- **Original:** https://www.hackerone.com/blog/preventing-directory-traversal-attacks-techniques-and-tips-secure-file-access
- **Phying News:** https://phying.com/item/1873