AlienVault announces availability of updated open ... » LONDON, UK: AlienVault announced the general availability of an updated version of Open Threat Excha... BeyondTrust introduces first commercial least pr... » PHOENIX: BeyondTrust has announced the release of PowerBroker for Mac to address security and compli... Free mobile app helps integrators work more effici... » OTTAWA, ONTARIO: March Networks has launched a new version of its industry-first GURU Smartphone App... Cult of celebrity reaches the gun world » A recent analysis of the sporting gun market by Bonhams, one of the major players in this field, sho... Bonhams antique arms and armour sales hit £1 mil... » The steely strength of the Antique Arms & Armour market at Bonhams was in evidence again this week w... Amosun, keep off campus politics...collecting N15,... » We would begin this editorial by sounding a very strong warning to all political officials in Nigeri... Trafficking: Human, Drug, Contraband and CBRNe at ... » Trafficking remains one of the major issues for border security and management agencies. Whether hum... Imperva Cited as a Leader by Independent Research ... » Imperva Incapsula DDoS Protection received highest score in Current Offering category REDWOOD SH... ROYAL NAVY'S LATEST SUBMARINE TO SET SAIL THIS SUM... » HMS Artful, the third of the Royal Navy’s new Astute Class attack submarines will set sail for sea t... Datum reaffirms its commitment to information secu... » FARNBOROUGH: Datum Datacentres has announced that it has achieved ISO 27001 transition to 2013 stand...


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.


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."