Why you shouldn't be using passwords of any kind on your Windows networks . . .

Posted Wednesday, July 28, 2004 3:17 PM by G Andrew Duthie

 …use passphrases instead:

So this is my first ever blog entry and seeing as how I'm a senior member of the PSS Security Incident Response team, you may think I've stopped taking my medication by opening with a title like the one above!  Medication issues notwithstanding, it's true - you should NOT be using passwords of any kind.  Why?  For starters, passwords are ridiculously easy to guess or crack.  Worms like Agobot / Phatbot / Polybot / SDBot / RBot (no I didn't write this one) all ship with dictionaries of passwords numbering in the hundreds and they can easily replicate to a system that has a password in this word list, and the miscreants are really good at keeping these wordlists up to date with passwords that they've cracked from other systems. 
As an example of what I'm talking about check out Symantec's write-up of this little nasty that we encounter on my team just about every day:

http://securityresponse.symantec.com/avcenter/venc/data/w32.hllw.gaobot.ae.html

 [Robert Hensing]

Read the whole thing at: http://weblogs.asp.net/robert_hensing/archive/2004/07/28/199610.aspx.

 

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Comments

# re: Why you shouldn't be using passwords of any kind on your Windows networks . . .

Wednesday, July 28, 2004 5:07 PM by Mark Anthony

I just glanced thru the article on symantec. Says the virus copies itself as Scvhost.exe. Is it possible to check if the existing copy of svchost.exe is actually a valid and untampered one? For instance a CRC value or MD5 value that MS provides for each of the system files? Ofcourse there is the issue of versions involved, not to mention the different OSes. Just wondering if there is something to that effect?

# Passwords, Passphrases, and validation

Tuesday, August 03, 2004 1:40 PM by TrackBack

# re:Why you shouldn't be using passwords of any kind on your Windows networks . . .

Sunday, April 10, 2005 3:56 AM by TrackBack

^_^,Pretty Good!

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