---
title: Enable Encrypted Client Hello (ECH)
impact: MEDIUM
impactDescription: protects SNI from eavesdropping
tags: tls, ech, sni, privacy, security
---

## Enable Encrypted Client Hello (ECH)

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)