NBCS supports calls for collaboration in fight aga... » “We couldn’t agree more with the recent comments made by Georgina Barnard, TP Crime Reduction & Part... British Personnel return home from campaign in Afg... » The final UK service personnel have left Kandahar Airfield in southern Afghanistan after completing ... ASC Business Group: Adapt quickly to minimise clou... » Organisations embracing cloud-based security management systems will see major benefits but must ada... Global maritime security market to grow to $20.87 ... » The recent report by Markets and Markets reveals that in the next five years the maritime security m... Brainloop solves “Dropbox Dilemma” facing UK busin... » London: Brainloop has launched its portfolio of simple, secure, collaboration tools into the UK to a... New Google web app security scanner + 95% of XSS w... » In light of Google's announcement about releasing an open source tool for testing web app security s... Datum Datacentres builds on its success » Datum Datacentres, the Farnborough-based business-critical co-location data centre provider, is deli... Olive Communications' Safetybank wins SaaS Produ... » Olive Communications' digital safety management platform, Safetybank, was recognised as the SaaS (So... BSI Standards Awards recognizes outstanding c... » BSI, the UK’s National Standards Body has officially recognized the outstanding contributions of its... Gartner names proofpoint a leader in 2014 Magic ... » London, UK: Proofpoint, Inc. has been positioned by Gartner, Inc. in the leaders quadrant of the 201...

CLICK HERE TO

Advertise with Vigilance

Got News?

Got news for Vigilance?

Have you got news/articles for us? We welcome news stories and articles from security experts, intelligence analysts, industry players, security correspondents in the main stream media and our numerous readers across the globe.

READ MORE

Subscribe to Vigilance Weekly

Information Security Header

A new attack makes some password cracking faster, easier than ever. A researcher has devised a method that reduces the time and resources required to crack passwords that are protected by the SHA1 cryptographic algorithm.

Tal Be'ery, Web Researcher at Imperva has looked into the SHA1 methodology and why companies should stay clear of using this method to protect passwords:

 

"First, some context. One of the main use cases for hashing function, such as the SHA-1 function, is to store passwords securely. When attackers obtain such hashed password, they need to launch a “brute force” attack against it, in order to reveal the password. “Brute force” means, they need to repeatedly guess the password, apply the hashing function on it and compare the result with their hash password they have. The security researcher has found an algorithmic shortcut in SHA-1 calculation that makes the computation easier, thus reducing the time needed to successfully “brute force” an attack.

The corollary? In case the hashing is done for security (e.g. hash user passwords, verify data integrity, etc.):

MD5 is dead and should never be used.

SHA-1 is going in the same direction. Consider an upgrade of existing systems and definitely don't use it for new systems.

A smart choice would be to follow the U.S. National Institute of Standards and Technology (NIST) recommendation for federal agencies: "Federal agencies should stop using SHA-1 for generating digital signatures, generating time stamps and for other applications that require collision resistance."

Best option? Use a hash function from SHA-2 family, such as the SHA256."