# Sensitive Data in LocalStorage

> Detects potential storage of sensitive credentials or JWTs directly in the browser's localStorage or sessionStorage.

- Skill: `zakirkun/sensitive-data-in-localstorage` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add zakirkun/sensitive-data-in-localstorage`
- Raw SKILL.md: https://api.skillmd.com/api/skills/zakirkun/sensitive-data-in-localstorage/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: zakirkun (https://skillmd.com/u/zakirkun)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/zakirkun/sensitive-data-in-localstorage

---


# Sensitive Data in LocalStorage

## Overview
Detects potential storage of sensitive credentials or JWTs directly in the browser's localStorage or sessionStorage.

## Remediation
Use HttpOnly/Secure cookies for session tokens. Local storage is easily accessible via any XSS vulnerability.