---
id: 8236
title: "LM Hash Cracking – Rainbow Tables vs GPU Brute Force"
source_domain: netspi.com
source_url: "https://www.netspi.com/blog/technical-blog/network-pentesting/lm-hash-cracking-rainbow-tables-vs-gpu-brute-force/"
published_at: "2014-10-06T00:00:00Z"
tags: ["windows", "ntlm", "gpu-cracking", "password-cracking", "lm-hash", "rainbow-tables"]
phying_url: "https://phying.com/item/8236"
lang: en
---

# LM Hash Cracking – Rainbow Tables vs GPU Brute Force

## Summary

Are rainbow tables still worth it for LM hashes? NetSPI compares table lookups with GPU brute force, explaining the format's two case-insensitive seven-character halves that favor GPU cracking.

## Intelligence Metadata

- **Sources:** netspi.com
- **Published:** 2014-10-06T00:00:00Z
- **Original:** https://www.netspi.com/blog/technical-blog/network-pentesting/lm-hash-cracking-rainbow-tables-vs-gpu-brute-force/
- **Phying News:** https://phying.com/item/8236