---
title: Do Not Use Default Credentials
impact: CRITICAL
impactDescription: prevents trivial compromise via known credentials
tags: credentials, default, passwords, configuration, security
---

## Do Not Use Default Credentials

This rule ensures high quality and security in Python and PySpark applications.

**Implementation Guidance:**
- Follow standard Python best practices (PEP 8)
- Use type hints for better clarity
- For PySpark, prefer DataFrame API over SQL strings where possible
- Ensure proper resource management (using \`with\` statements)