Feeds

GPU-stuffed monster cracks Windows passwords in minutes

That's what you get for using a crap hashing algo

Combat fraud and increase customer satisfaction

Security researchers have put together a monster number-crunching rig capable of cracking strong passwords by brute force in minutes.

Jeremi Gosney (aka epixoip) demonstrated a machine running the HashCat password cracking program across a cluster of five servers equipped with 25 AMD Radeon GPUs at the Passwords^12 conference in Oslo, Norway.

Gosney’s system means that even strong passwords protected by weak one-way encryption algorithms, notably the one used in Microsoft's LM and NTLM, are vulnerable.

A 14-character Windows XP password hashed using Lan Manager can be cracked from its hash value in just six minutes. LM splits a 14-character password into two seven-character strings before hashing them, which means it's a good deal less secure than an eight character password hashed with other encryption schemes. Brute forcing an eight-character password would take 5.5 hours, Security Ledger reports.

The attack could be run against leaked password hashes but not login methods directly. Since data breaches are by no means rare, this is not much of a barrier against misuse.

Services such as WPACracker and CloudCracker, a cloud-based platform for penetration testers, have already shown that older encryption algorithms and shorter passwords are hopelessly insecure. Gosney's research further underlines the point. ®

Combat fraud and increase customer satisfaction

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
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.
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.
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.