Feeds

Voice prints at risk from impostors

Up to 20% of voice biometric samples could be fooled by ‘wolves’

The Essential Guide to IT Transformation

Ten to twenty per cent of utterances collected by voice biometrics systems are not strong identifiers of the individual that spoke them, according to Dr. Clive Summerfield, the founder of Australian voice biometrics outfit Armorvox. Voice biometrics systems could therefore wrongly identify users under some circumstances.

Most voice biometrics implementations require users to utter a pass phrase or mention personal details as part of their authentication process. Dr. Summerfield told The Register that while a small fraction of the population, which he labels “wolves”, have voices that match many other voice prints, the need to know the pass phrase means voice biometrics systems are not likely to be casually cracked without an effort to also collect users' secret words. But he also feels that most voice biometrics systems build in tolerances for those with less distinct voice prints, therefore applying a lower authentication standard for all users.

Some of the less-effective voice prints are gathered because of ambient noise when utterances are collected. Signal clipping applied by carriers can also have the unintended consequence of reducing the quality of voice prints. Some individuals simply have generic voice prints that share qualities with many others. Summerfield labels those afflicted, for whatever reason, with poor voice prints as “goats”, in contrast with the majority of “sheep” whose voices are a strong authentication token.

Armorvox’s answer is a system it calls ImpostorMap which tests every utterance in a database to see if any could authenticate more than one user. Those with less-secure voiceprints can then be encouraged to re-enrol with a better sample. By doing so, Summerfield says voice biometrics can become a stronger authentication technique as users create more distinct utterance collections that are harder to imitate.

The company has already secured channel partners in Australia and is actively seeking implementation partners beyond Antipodean shores. ®

Build a business case: developing custom apps

More from The Register

next story
14 antivirus apps found to have security problems
Vendors just don't care, says researcher, after finding basic boo-boos in security software
'Things' on the Internet-of-things have 25 vulnerabilities apiece
Leaking sprinklers, overheated thermostats and picked locks all online
iWallet: No BONKING PLEASE, we're Apple
BLE-ding iPhones, not NFC bonkers, will drive trend - marketeers
Only '3% of web servers in top corps' fully fixed after Heartbleed snafu
Just slapping a patched OpenSSL on a machine ain't going to cut it, we're told
How long is too long to wait for a security fix?
Synology finally patches OpenSSL bugs in Trevor's NAS
Secure microkernel that uses maths to be 'bug free' goes open source
Hacker-repelling, drone-protecting code will soon be yours to tweak as you see fit
Israel's Iron Dome missile tech stolen by Chinese hackers
Corporate raiders Comment Crew fingered for attacks
Tor attack nodes RIPPED MASKS off users for 6 MONTHS
Traffic confirmation attack bared users' privates - but to whom?
Roll out the welcome mat to hackers and crackers
Security chap pens guide to bug bounty programs that won't fail like Yahoo!'s
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Backing up Big Data
Solving backup challenges and “protect everything from everywhere,” as we move into the era of big data management and the adoption of BYOD.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.