Mandiant Publishes Rainbow Tables That Crack NTLMv1 Admin Passwords

Gbhackers •Divya • January 19, 2026

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Mandiant Releases NTLMv1 Rainbow Tables for Admin Password Cracking Mandiant has publicly released a dataset of Net-NTLMv1 rainbow tables, highlighting the vulnerabilities of the deprecated NTLMv1 authentication protocol. This release affects organizations still using NTLMv1, which has been known to be insecure since 1999. The dataset enables the cracking of NTLMv1 admin passwords, urging immediate migration to more secure authentication methods. 2 sources 25

Mandiant Publishes Rainbow Tables That Crack NTLMv1 Admin Passwords

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