EC-Council: Computer Hacking Forensic Investigator(CHFI-V10)
Module 8 : Network Forensics
         
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Question No 80

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QID: 645  
   
You are the network administrator for a small bank in Dallas, Texas. To ensure network security, you enact a security policy that requires all users to have 14 character passwords. After giving your users 2 weeks notice, you change the Group Policy to force 14 character passwords. A week later you dump the SAM database from the standalone server and run a password- cracking tool against it. Over 99% of the passwords are broken within an hour. Why were these passwords cracked so Quickly?


 
A:    Passwords of 14 characters or less are broken up into two 7-character hashes
  
B:    A password Group Policy change takes at least 3 weeks to completely replicate throughout a network
C:    Networks using Active Directory never use SAM databases so the SAM database pulled was empty
  
D:    The passwords that were cracked are local accounts on the Domain Controller
 
         

 
 

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Comunity Comments:

Banwari on 21/05/2025
Opted Answer: A
LM hash limitation.
In Windows systems, passwords of 14 characters or less are split into two separate 7-character hashes due to the LM (LAN Manager) hash system. This makes them significantly weaker because each half can be cracked independently, reducing the complexity of the password.
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