Mandiant Unleashes Net-NTLMv1 Rainbow Tables to Kill a 25-Year-Old Zombie Protocol
Mandiant just handed security pros a loaded gun against Net-NTLMv1, with rainbow tables that crack hashes on a $600 PC. It's time to bury this relic for good.
⚡ Key Takeaways
- Mandiant's free rainbow tables crack Net-NTLMv1 hashes in hours on $600 hardware, lowering exploit barriers dramatically. 𝕏
- Despite 25+ years of known flaws, Net-NTLMv1 persists in AD environments due to inertia—now demo-able instantly. 𝕏
- Disable via GPO NTLMv2 enforcement; expect enterprise patching waves mirroring past protocol kills like SSLv2. 𝕏
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Originally reported by Mandiant Blog
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