Feeds

Researcher cracks Wi-Fi passwords with Amazon cloud

Return of the Caveman attack

SANS - Survey on application security programs

A security researcher has tapped Amazon's cloud computing service to crack Wi-Fi passwords in a fraction of the time and for a fraction of the cost of using his own gear.

Thomas Roth of Cologne, Germany told Reuters he used custom software running on Amazon's Elastic Compute Cloud service to break into a WPA-PSK protected network in about 20 minutes. With refinements to his program, he said he could shave the time to about six minutes. With EC2 computers available for 28 cents per minute, the cost of the crack came to just $1.68.

“People tell me there is no possible way to break WPA, or, if it were possible, it would cost you a ton of money to do so,” Roth told the news service. “But it is easy to brute force them.”

Roth is the same researcher who in November used Amazon's cloud to brute force SHA-1 hashes. Roth said he cracked 14 hashes from a 160-bit SHA-1 hash with a password of between one and six characters in about 49 minutes. He told The Register at the time he'd be able to significantly reduce that time with minor tweaks to his software, which made use of “Cluster GPU Instances” of the EC2 service.

As the term suggests, brute force cracks are among the least sophisticated means of gaining unauthorized access to a network. Rather than exploit weaknesses, they try huge numbers of possible passwords until the right phrase is entered. Roth has combined this caveman approach with a highly innovative technique that applies it to extremely powerful servers that anyone can rent at highly affordable rates.

Roth's latest program uses EC2 to run through 400,000 possible passwords per second, a massive amount that only a few years ago would have required the resources of a supercomputer. He is scheduled to present his findings at next week's Black Hat security conference in Washington, DC. ®

High performance access to file storage

More from The Register

next story
Obama allows NSA to exploit 0-days: report
If the spooks say they need it, they get it
Putin tells Snowden: Russia conducts no US-style mass surveillance
Gov't is too broke for that, Russian prez says
Snowden-inspired crypto-email service Lavaboom launches
German service pays tribute to Lavabit
Mounties always get their man: Heartbleed 'hacker', 19, CUFFED
Canadian teen accused of raiding tax computers using OpenSSL bug
Heartbleed exploit, inoculation, both released
File under 'this is going to hurt you more than it hurts me'
Arts and crafts store Michaels says 3 million credit cards exposed in breach
Meanwhile, Target investigators prepare for long process in nabbing hackers
Canadian taxman says hundreds pierced by Heartbleed SSL skewer
900 social insurance numbers nicked, says revenue watchman
prev story

Whitepapers

SANS - Survey on application security programs
In this whitepaper learn about the state of application security programs and practices of 488 surveyed respondents, and discover how mature and effective these programs are.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.