SpoofBounty.com
Crowd-Sourced Biometric Security Testing Explained

 
 

What is a “Spoof Bounty Program”?

A spoof bounty program is an incentivized public whitehat security test designed to ensure that a biometric authenticator is secure in the real world, not just the Lab or the classroom.  Similar to a software bug bounty program, if a tester can find a spoof that fools the system, they are rewarded with a monetary payout.  Through this process, the vendor providing the biometric authentication software and the bounty learns about the vulnerability and can work to patch it.

 
How Spoof Bounties Make Us Safer
 

With this open-source style of testing, biometric vendors can no longer hide behind their "Request A Demo" links; their security software must be open for all to evaluate and test. This approach provides transparency and peace of mind by ensuring that vendors can prove their security in the same real-world environments that their customers operate in.
 

Spoof Artifact Levels
 

When a non-living object that exhibits human traits (an "artifact") is presented to a camera or biometric sensor, it's called a "spoof".  Photos, videos, masks, and dolls are all common examples of spoofing artifacts.
  There are three commonly accepted levels of artifacts that are based on how difficult or expensive they are to create.
  

 Artifact Level Description Example
 Level 1 (A) Hi-res paper & digital photos, digital deepfakes, hi-def challenge/response videos and paper masks.
 Level 2 (B) Commercially available lifelike dolls, and human-worn resin, latex & silicone 3D masks under $300 in price.
 
 Level 3 (C) Custom-made ultra-realistic 3D masks, wax heads, etc., up to $3,000 in creation cost.

  
  
Are Anti-Spoofing & Liveness Detection the Same Thing?

Yes, for the most part, and in this site we will use those terms interchangeably.  To add context, if a non-living artifact (photo, video, mask, etc.) fools a face authenticator, it's called a spoof.  If a face authenticator is fooled by a similar-looking, living person, then it's an impostor, a.k.a., a "matching false accept."
 
 
How Liveness Detection Protects Us From Identity Fraud
 
Liveness detection prevents non-living artifacts from creating or accessing accounts because a photo won't fool the AI.  And, neither will a video, a copy of your driver license, passport, fingerprint, or iris.  The legitimate user must be physically present to access their accounts, so there is no need to worry about keeping biometric data a "secret".  Liveness detection prevents bots and bad actors from using stolen photos, deepfake videos, masks, or other spoof artifacts to create or access online accounts, ensuring only real humans can create and access accounts.

Liveness checks solve some very serious problems.  For example, Facebook had to delete 5.4 billion fake accounts in 2019 alone!  Requiring proof of Liveness would have prevented these fakes from ever being created.
  

Note: In 2019, the crypto-currency wallet ZenGo offered a challenge: spoof Certified Liveness Detection and "steal" one Bitcoin (worth over $11,000 at the time).  A hi-res photo of the ZenGo CEO was provided, and the savvy cypherpunks gave it their best shot.  The ZenGo wallet remained unspoofed, and the Bitcoin stayed safe, proving the efficacy of Certified Liveness Detection in one of the most public displays of biometric security to date (https://zengo.com/update-a-successful-zengo-challenge-for-us).
      
   
Why Spoof Bounty Programs Provide More Confidence Than Laboratory Testing

Spoof bounty programs are the future of biometric security testing because no lab can possibly create or purchase all of the spoof artifacts that can be crowd-sourced from even a small spoof bounty program. Most labs test for presentation attack detection (PAD) using only five or six spoof artifacts.  Test sets this small have almost no significance in the real world given that about 1-2% of sessions during account onboarding (initial new account signups) are spoofs. 

For example, if you had one million users, then your biometric authenticator would see 10,000-20,000 different spoof artifacts.  Contrast that with the five-six from today's best laboratory testing, and you can understand why it's much tougher to be secure in the real world.
 
 
The FaceTec $75,000 Spoof Bounty Program 

To prevent you from being another public test case, it is important to insist that your biometric vendor maintain a persistent spoof bounty program to ensure they are aware of and robust to any emerging threats, like deepfakes.  As of today, the only biometric authentication vendor with an active, real-world spoof bounty is FaceTec.  Having already rebuffed over 15,000 real-world spoof attacks, the goal of the $75,000 Spoof Bounty Program remains to uncover unknown vulnerabilities in the liveness AI and security scheme so they can be patched, and the anti-spoofing capabilities elevated even further.

For more information on liveness detection please visit www.Liveness.com

 

 FaceTec's Distribution Partners Vendors Without Spoof Bounties

Certified iBeta/NIST PAD: Level 1 & 2
        

01 Systems
Autentikar
Authenteq
BTS Digital
Bryk Group
Certisign
Civic
e4 Global
EvidentID
FaceTec
FintechOS
Fractal
Gemalto/Thales
Gulf Data-gDi
Idenfy
IDnow
Jumio
Karalundi
Kvalifika
Nets
Neuvote
Ondato
OneyTrust
Passbase
PBSA Group
Polygon
Pulsar AI
Solus Connect
Sum & Substance
TiC Now
Tekbees
TeraSystem
Valid
VerifyMyAge
VNG
Yoti
ZealiD

Bahrain
Chile
Iceland
Kazakhstan
Australia
Brazil
USA
South Africa
USA
USA
Romania
Germany
France
UAE
Lithuania
Germany
USA
Mexico
Georgia
Denmark
Canada
Lithuania
France
USA
South Africa
Portugal
Georgia
Singapore
United Kingdom
Chile
Columbia
Philippines
Brazil
United Kingdom
Vietnam
United Kingdom
Sweden

    

$75,000 Spoof Bounty Program 




Aware
BioID
Daon
FacePhi
HID

iProov
Imageware
Mati
Nuance

Sensory
& more...




None of these Vendors, or any
other (except FaceTec) currently
maintain Spoof Bounty Programs
and these Vendors' security claims
have not been vetted open real-world
testing. Buyer-Beware.


 
Early Academic Papers About Liveness & Anti-Spoofing
 

One of the earliest papers on liveness detection was published by Stephanie Shuckers, S.A., in 2002.  "Spoofing and anti-spoofing measures", is widely regarded as the foundation of today's academic body of work on the subject.  The paper states that, "Liveness detection is based on recognition of physiological information as signs of life from liveness information inherent to the biometric".  

Later in 2016, her follow-up, "Presentations and Attacks, and Spoofs, Oh My", continued to influence presentation attack detection research and testing. 

 
Is Facial Recognition the Same as 
Anti-Spoofing & Face Authentication?

‚ÄčNo, they are not, and it is critical to a basic understanding of these biometric technologies to start using the correct terminology to prevent any further confusion about how biometrics are different, and where they are best used.

Facial recognition is for surveillance.  It's the 1-to-N matching of images captured with cameras the user doesn't control, like those used in a casino or an airport.  And it only provides "possible" matches for the surveilled person from face photos stored in an existing database.

Face authentication (1:1 matching+liveness), in contrast, takes user-initiated data collected from a user-controlled device and confirms the legitimate user's identity for their own direct benefit, like, for example, secure account access.

These technologies may share a resemblance and even overlap a bit, but it is counter productive to group the two together.  Like any powerful tech, this is a double-edged sword: how facial recognition is conducted and managed has proven to be a possible threat to privacy while face authentication - making certain that only the legitimate individual is allowed access - is a significant win for it.
 
 
Should We Fear Centralized Face Authentication?
 

Fear of biometric authentication stems from the belief that centralized storage of biometric data creates a "honeypot" that, if breached, compromises the security of all other accounts that rely on that same biometric data.

Detractors argue, "You can reset your password if stolen, but you can't reset your face."  While this is true, it is a failure of imagination and understanding to stop there.  We must ask, "What would make centralized biometric authentication safe?"

The answer is Certified Liveness Detection.  With it, the biometric honeypot is no longer to be feared because the very high level of security doesn't need to rely on biometric data being kept secret.

Learn more about how Certified Liveness Detection makes centralized data storage safe in this comprehensive FindBiometrics white paper.
   

Methods that Won't Ever Have a Bounty Program

Some types of liveness detection are not secure enough for their vendors to ever release a spoof bounty program, and the vendor would just be giving away money and has no chance of patching their security holes.

Weak liveness detection methods include: blink, smile, turn/nod, colored flashing lights, making random faces, speaking random numbers, and many more. All are easily spoofed.

User security and hard-won corporate credibility is put at risk by trusting unscrupulous vendor's exaggerated claims. 

When vendors claim to have "robust liveness detection", they should Provide an open Spoof Bounty Program, or stop selling it.

Note: Watch USAA Bank's non-certified "Facial Recognition" app security
get spoofed by a crude photo slideshow, easily unlocking
one of their user's bank accounts ------------------->

                
 

The Threat of Deepfakes
 
So-called "deepfakes" have been around for years, but now even the general public understands that digital media can be manipulated easily.

2D liveness detection is very vulnerable to deepfake spoofs derived from photos or videos, so it should not be used for biometric security.

Note: Watch as a basic "deepfake" puppet is created in 20 seconds
that can be used to spoof almost every 2D liveness
vendor on the market today ------------------->

                             

  

 
   

Lab Testing for Anti-Spoofing
 
Currently, the NIST/NVLAP-accredited Lab, iBeta in Denver, CO USA, is the only liveness testing lab guided by the ISO 30107 global testing standard (https://www.ibeta.com/biometric-testing).  Unfortunately, iBeta no longer provides comprehensive Certification testing, only time-limited compliance reviews.  iBeta has never provided, and no longer provides Level 3 Certification testing, so FaceTec created the $75,000 Spoof Bounty Program to prove real-world Level 3 security.

Every organization has a fiduciary duty to provide the strongest liveness detection available to their users whenever remote, unsupervised biometric onboarding or authentication is required.

        
 

Anti-Spoofing for Onboarding, KYC and Enrollment

Requiring every new user to prove their liveness before they are even asked to present an ID document during digital onboarding is itself a huge deterrent to fraudsters who never want their real face on camera.
 
If an onboarding system has a weakness, the bad guys will exploit it to create as many fake accounts as possible.  To prevent this, Certified Liveness Detection during new account onboarding should be required.  Then we know that the new account belongs to a real human and their biometric data can be stored as a trusted reference of their digital identity in the future.

   

 
   

Anti-Spoofing for Ongoing Authentication (Password Replacement)
 
Since most biometric attacks are spoof attempts, Certified Liveness Detection during user authentication must be mandatory.  With multiple high-quality photos of almost everyone available on Google or Facebook, a biometric authenticator cannot rely on secrecy for security. 

Liveness detection is the first and most important line of defense against targeted spoof attacks on authentication systems.  The second is a very high FAR (see Glossary, below) for accurate biometric matching.   

With Certified Liveness Detection you can't even make a copy of your biometric data that would fool the system even if you wanted to.  Liveness catches the copies by detecting generation loss, and only the genuine, physically present user can gain access.

 
 
ISO/IEC 30107 - The 
Anti-Spoofing Global Standard 

https://www.iso.org/standard/67381.html is the International Organization for Standardization’s (ISO) testing guidance for evaluation of Anti-Spoofing technology, a.k.a., Presentation Attack Detection (PAD).  Three document editions have been published to date, with a fourth edition currently in progress (as of November, 2019).
 
“bio” “metrics” literally means to measure live human physical characteristics.  Ironically, it took until late 2017 for anyone to release official guidance on how to determine if the subject of a biometric scan is actually alive.

Due to "hill-climbing" attacks (see Glossary, below), biometric systems should never reveal which part of the system did or didn't catch a spoof.  And while ISO 30107-3 gets a lot right, it unfortunately encourages testing both Liveness and Matching at the same time.  Scientific method requires the fewest variables possible be tested at once, so Liveness testing should be done with a solely Boolean (true/false) response.  Tests should not allow systems to have multiple-decision layers that could allow an artifact to pass Liveness but fail Matching because it didn't "look" enough like the enrolled subject. 
  
 
Should Anti-Spoofing Be Required By Law?
 

We believe that legislation must be passed to make Liveness Detection mandatory if biometrics are used for Identity & Access Management (IAM).  Our personal data has already been breached, so we can no longer trust Knowledge Based Authentication (KBA).  We must turn our focus from maintaining databases full of "secrets" to securing attack surfaces.  Current laws already require organic foods to be certified, and every medical drug must be tested and approved.  In turn, governments around the world should require Certified Liveness Detection be used to protect the digital safety and biometric security of their citizens.

 

What Is a faceCAPTCHA?

Not to be confused with a "Face Capture," a faceCAPTCHA, like FaceTec's 3D Liveness Check, is a much better way to prove that it's not a bot accessing a web page.

While still remaining anonymous, a faceCaptcha can also prove that a user is old enough to access restricted content while also performing an Age Check while verifying Liveness.

                    


 
Resources & W
hitepapers
 

Information Security Magazine - Dorothy E. Denning's (
wiki) 2001 article, “It Is "Liveness," Not Secrecy, That Counts

FaceTec: 
There's a New Sheriff in Town - Standardized PAD Testing & Liveness Detection - Biometrics Final Frontier

Gartner, “Presentation attack detection (PAD, a.k.a., “liveness testing”) is a key selection criterion.  ISO/IEC 30107 “Information Technology — Biometric Presentation Attack Detection” was published in 2017.  
 
(Gartner’s Market Guide for User Authentication, Analysts: Ant Allan, David Mahdi, Published: 26 November 2018). FaceTec’s ZoOm was cited in the report.  For subscriber access: 
https://www.gartner.com/doc/3894073?ref=mrktg-srch.
  
Forrester, "
The State Of Facial Recognition For Authentication - Expedites Critical Identity Processes For Consumers And Employees"  By Andras Cser, Alexander Spiliotes, Merritt Maxim, with Stephanie Balaouras, Madeline Cyr, Peggy Dostie.  For subscriber
access: https://www.forrester.com/report/The+State+Of+Facial+Recognition+For+Authentication+And+Verification/-/E-RES141491#

Ghiani, L., Yambay, D.A., Mura, V., Marcialis, G.L., Roli, F. and Schuckers, S.A., 2017. Review of the Fingerprint Liveness Detection (LivDet) competition series: 2009 to 2015. Image and Vision Computing58, pp.110-128:
https://www.clarkson.edu/sites/default/files/2017-11/Fingerprint%20Liveness%20Detection%2009-15.pdf 

Schuckers, S., 2016. Presentations and attacks, and spoofs, oh my. Image and Vision Computing55, pp.26-30:
https://www.clarkson.edu/sites/default/files/2017-11/Presentations%20and%20Attacks.pdf  

Schuckers, S.A., 2002. Spoofing and anti-spoofing measures. Information Security technical report(4), pp.56-62:
https://www.clarkson.edu/sites/default/files/2017-11/Spoofing%20and%20Anti-Spoofing%20Measures.pdf  

  

Glossary - Biometrics Industry & Testing Terms:

1:1 (1-to-1) – Comparing the biometric data from a subject User to the biometric data stored for the expected User.  If the biometric data does not match above the chosen FAR level, the result is a failed match.

1:N (1-to-N) – Comparing the biometric data from one individual to the biometric data from a list of known individuals, the faces of the people on the list that look similar are returned.  This is used for facial recognition surveillance, but can also be used to flag duplicate enrollments.

Artifact (Artefact) –  An inanimate object that seeks to reproduce human biometric traits. 

Authentication – Concurrent Liveness Detection and 1:1 biometric matching of the User.

Bad Actor – A criminal; a person with intentions to commit fraud by deceiving others.

Biometric – The measurement and comparison of data representing the unique physical traits of an individual for the purposes of identifying that individual based on those unique traits.

Certification – The testing of a system to verify its ability to meet or exceed a specified performance standard.  Testing labs Like iBeta issue certifications.

Complicit User Fraud – When a User pretends to have fraud perpetrated against them, but has been involved in a scheme to defraud by stealing an asset and trying to get it replaced by an institution.

Cooperative User – When a testing organization is guided by ISO 30107-3, the human Subjects used in the tests must provide any and all biometric data that is requested.  This helps to assess the complicit User fraud and phishing risk, but only applies if the test includes matching (not recommended).

Centralized Biometrics – Biometric data is collected on any supported device, encrypted and sent to a server for enrollment and later authentication for that device or any other supported device.  When the User’s original biometric data is stored on a secure 3rd-party server, that data can continue to be used as the source of trust, and their identity can be established and verified at any time.  Any supported device can be used to collect and send biometric data to the server for comparison, enabling Users to access their accounts from all of their devices, new devices, etc., just like with passwords.  Liveness Detection is the most critical component of a centralized biometric system, and because certified Liveness did not exist until recently, centralized biometrics have not yet been widely deployed.

Credential Sharing – When two or more individuals do not keep their credentials secret and can access each others accounts.  This can be done to subvert licensing fees or to trick an employer into paying for time not worked (also called “buddy punching”).

Credential Stuffing – A cyberattack where stolen account credentials, usually comprising lists of usernames and/or email addresses and the corresponding passwords, are used to gain unauthorized user account access.

Decentralized Biometric – When biometric data is captured and stored on a single device and the data never leaves that device.  Fingerprint readers in smartphones and Apple’s Face ID are examples of decentralized biometrics.  They only unlock one specific device, they require re-enrollment on any new device, and further do not prove the identity of the User, whatsoever.  Decentralized biometric systems can be defeated easily if a bad actor knows the device's override PIN number, allowing them to overwrite the User’s biometric data with their own.

Deepfake  A deepfake (a portmanteau of “deep learning” and “fake”) is an AI-based technology that can produce or alter digital video content so that it presents something that did not in fact occur.

End User – An individual human who is using an application.

Enrollment – When biometric data is collected for the first time, encrypted and sent to the server.  Note: Liveness must be verified and a 1:N check should be performed against all the other enrollments to check for duplicates.

Face Authentication – 1:1 Face Matching + Liveness takes User-initiated data collected from a device they do control and confirms that User's identity for their own direct benefit, like, for example, secure account access.

Face Matching – Newly captured images/biometric data of a person are compared to the enrolled (previously saved) biometric data of the expected User, determining if they are the same.

Facial Recognition –  2D Face Matching used for surveillance; it's the 1-to-N matching of images captured with cameras the User doesn't control, like those in a casino or an airport. And it only provides "possible" matches for the surveilled person from face photos stored in an existing database.

Face Verification – Matching the biometric data of the Subject User to the biometric data of the Expected User.

FAR (False Acceptance Rate) – The probability that the system will accept an impostor’s biometric data as the correct User’s data and incorrectly provide access to the impostor.

FIDO – The acronym for Fast IDentity Online, FIDO is an independent standards body that provides guidance to organizations that choose to use Decentralized Biometric Systems (https://fidoalliance.org).

FRR/FNMR/FMR – The probability that a system will reject the correct User when that User’s biometric data is presented to the sensor.  If the FRR is high, Users will be frustrated with the system because they are prevented from accessing their own accounts.

Hill-Climbing Attack – When an attacker uses information returned by the biometric authenticator (match level or liveness score) to learn how to modify their attacks to increase the probability of spoofing the system. 

iBeta – A NIST-certified testing lab in Denver Colorado; the only lab currently certifying biometric systems for anti-spoofing/Liveness Detection to the ISO 30107-3 standard (ibeta.com).

Identity & Access Management (IdAM/IAM) – A framework of policies and technologies to ensure only authorized users have appropriate access to restricted technology resources, services, physical locations and accounts.  Also called identity management (IdM).

Impostor – A living person with traits similar enough to a Subject User that the system determines the biometric data is from the same person.

ISO 30107-3 – The International Organization for Standardization’s testing guidance for evaluation of Anti-Spoofing technology (www.iso.org/standard/67381.html).

Knowledge-Based Authentication (KBA) - Authentication method that seeks to prove the identity of someone accessing a digital service.  KBA requires knowing a user's private information to prove that the person requesting access is the owner of the digital identity.  Static KBA is based on a pre-agreed set of shared secrets.  Dynamic KBA is based on questions generated from additional personal information.

Liveness Detection – The ability for a biometric system to determine if User biometric data has been collected from a live human or an inanimate, non-living Artifact.

NIST (National Institute of Standards and Technology) – The U.S. government agency that provides measurement science, standards, and technology to advance economic advantage in business and government (nist.gov).

Phishing – When a User is tricked into giving a Bad Actor their passwords, PII, credentials, or biometric data.  Example: A User gets a phone call from a fake customer service agent and they request the User’s password to a specific website.

PII – Personally Identifiable Information is information that can be used on its own or with other information to identify, contact, or locate a single person, or to identify an individual in context (en.wikipedia.org/wiki/Personally_identifiable_information).

Presentation Attack Detection (PAD) – A framework for detecting presentation attack events. Related to Liveness Detection and Anti-Spoofing.

Root Identity Provider – An organization that stores biometric data appended to corresponding personal information of individuals, and allows other organizations to verify the identities of Subject Users by providing biometric data to the Root Identity Provider for comparison.

Spoof – When a non-living object that exhibits some biometric traits is presented to a camera or biometric sensor.  Photos, masks, or dolls are examples of Artifacts used in spoofs.

Subject User – The individual that is presenting their biometric data to the biometric sensor at that moment.

Synthetic Identity When a Bad Actor uses a combination of biometric data, name, social security number, address, etc. to create a new record for a person who doesn't actually exist, and for the purposes of using an account in that name.



Editors & Contributors
 

Kevin Alan Tussy
Editor-in-Chief

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John Wojewidka
Senior Editor

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Josh Rose
Tech Editor

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