Cheap GPUs are Rendering Strong Passwords Useless | ZDNet

Posted: June 2, 2011 in Security

Cheap GPUs are rendering strong passwords useless

Think that your eight-character password consisting of lowercase characters, uppercase characters and a sprinkling of numbers is strong enough to protect you from a brute force attack?

Think again!The results are startling. Working against NTLM login passwords, a password of “fjR8n” can be broken on the CPU in 24 seconds, at a rate of 9.8 million password guesses per second. On the GPU, it takes less than a second at a rate of 3.3 billion passwords per second.

Increase the password to 6 characters (pYDbL6), and the CPU takes 1 hour 30 minutes versus only four seconds on the GPU. Go further to 7 characters (fh0GH5h), and the CPU would grind along for 4 days, versus a frankly worrying 17 minutes 30 seconds for the GPU.

Continue reading whole article via Cheap GPUs are rendering strong passwords useless | ZDNet.

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