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Patrick Hirt
Works at Swisscom IT Services AG
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Patrick Hirt

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All these years... I was doing it wrong
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Patrick Hirt

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Brrrrm, brrrm
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Patrick Hirt

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Everyone knows one. If not, then it's probably you. :)

#grammarnazi #peanuts
#admit

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Lol

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I am a Programmer. I have no Life.
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xD weisch wi unbequem!
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Patrick Hirt

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Le awsum table soccer illumination
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Have him in circles
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Patrick Hirt

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Abstraktion? Was für eine Abstraktion? Ist doch völlig straight-forward
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Patrick Hirt

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25-GPU cluster cracks every standard Windows password in <6 hours

The #Linux-based GPU cluster runs the Virtual OpenCL cluster platform, which allows the graphics cards to function as if they were running on a single desktop computer. ocl-Hashcat Plus, a freely available password-cracking suite optimized for GPU computing, runs on top, allowing the machine to tackle at least 44 other algorithms at near-unprecedented speeds. In addition to brute-force attacks, the cluster can bring that speed to cracks that use a variety of other techniques, including dictionary attacks containing millions of words.

A password-cracking expert has unveiled a computer cluster that can cycle through as many as 350 billion guesses per second. It's an almost unprecedented speed that can try every possible Windows passcode in the typical enterprise in less than six hours.

The five-server system uses a relatively new package of virtualization software that harnesses the power of 25 AMD Radeon graphics cards. It achieves the 350 billion-guess-per-second speed when cracking password hashes generated by the NTLM cryptographic algorithm that Microsoft included in every version of Windows since Server 2003. As a result, it can try an astounding 958 combinations in just 5.5 hours, enough to brute force every possible eight-character password containing upper- and lower-case letters, digits, and symbols. Such password policies are common in many enterprise settings. 

The same passwords protected by Microsoft's LM algorithm—which many organizations enable for compatibility with older Windows versions—will fall in just six minutes.


http://arstechnica.com/security/2012/12/25-gpu-cluster-cracks-every-standard-windows-password-in-6-hours/
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Patrick Hirt

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Raspberry Pi FTW
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Have him in circles
66 people
Damian Mathieu's profile photo
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HEXAPOLIS's profile photo
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Unix System Engineer
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  • Swisscom IT Services AG
    Unix System Engineer, present
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