A security researcher in Germany is warning Amazon’s cloud service can be used to brute force weak passwords used to protect Wi-Fi security. Short and weak passwords would be vulnerable to a brute force attack, especially at the speeds offered by Amazon’s services, which is capable of testing 400,000 potential passwords every second. The researcher claims to have found the key for a network in his neighborhood using his method and Amazon’s service. The brute force attack took about 20 minutes to get the correct key, but he is making changes to his code which he reckons could bring the time down in such a case to about 6 minutes. He will distribute his software publicly and give demonstrations on using it at the Black Hat conference in Washington, D.C. He is releasing it to convince skeptical network administrators that such attacks will often be successful against protected networks.
Source: http://www.afterdawn.com/news/article.cfm/2011/01/11/security_researcher_uses_ama%20zon_cloud_to_hack_wpa-psk_passwords
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