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6日前

Larger Attack Surface on User’s Device

Hitoshi Kokumai · I today take up this The Register report - “Client-side content scanning as an unworkable, insecure disaster for democracy” · https://www.theregister.com/2021/10/15/clientside_side_scanning/ · Glancing over this worrying report, I found this paragraph especially eye-catching; “I ...

6日前

Truly Big Threat

Hitoshi Kokumai · The quantum computer held in a bad guy’s hand is indeed a big threat. So is the artificial intelligence that has gone out of control. · However, a yet bigger threat comes from the humans who are indifferent to the power and value of humans' volition and memory. · Worst would be ...

1ヶ月前

Quantum Computing and Identity Assurance

Hitoshi Kokumai · Bad guys, who have a quantum computer at hand, would still have to break the part of user authentication that is not dependent on the public-key scheme, prior to accessing the target data, in the normal environment where secret credentials play a big role; quite a few cryptograph ...

1ヶ月前

Graphs talk the nature of biometrics

Hitoshi Kokumai · Biometrics is 'probabilistic' by nature since it measures unpredictably variable body features of living animals in ever changing environments. · – FAR and FRR are not the variables that are independent from each other, but are dependent on each other · – the lower a FAR is, the ...

1ヶ月前

New Slide - Healthy Second Life of Legacy Password Systems

Hitoshi Kokumai · We’ve come up with a slide presentation for “Bring a healthy second life to your legacy password system” · “We do not have to replace or rebuild the existing text password systems for making use of episodic memory; images of our episodic memory can be turned into a high-entropy c ...

2ヶ月前

UN Human Rights Committee on Biometrics

Hitoshi Kokumai · Today's topic is the announcement by UN Human Rights Committee that storing biometric data on identity cards violates privacy –https://www.ohchr.org/EN/NewsEvents/Pages/DisplayNews.aspx?NewsID=27329&LangID=E · This is another case that biometrics is viewed as conflicting with hum ...

2ヶ月前

Another Aspect of Biometrics

Hitoshi Kokumai · Today I take up this report “Europe makes the case to ban biometric surveillance” https://www.wired.co.uk/article/europe-ai-biometrics · A friend has directed me to this very intriguing news, which reads “the biometrics business is on a collision course with Europe’s leading data ...

2ヶ月前

Biometrics is to Password what Back door is to Front door

Hitoshi Kokumai · Let me try to make the relation of a biometrics and a default password clearer with the picture of a house with a front door of a deterministic password system, to which a back door of a probabilistic biometrics system was added as another entrance. · Residents are required to us ...

6ヶ月前

Who will bear the costs for rescuing the people who get falsely accepted and falsely rejected?

Hitoshi Kokumai · "India uses controversial Aadhaar facial biometrics to identify COVID vaccination recipients - Safer than eyeballs or fingerprints, apparently"   https://www.theregister.com/2021/04/09/india_facial_id_covid_vaccinations/ · On top of the issues raised in the report comes this ques ...

6ヶ月前

Was correct information given to the questionees before asking the question?

Hitoshi Kokumai · "Consumers recognize biometrics security tops passwords, Experian says"   https://www.biometricupdate.com/202104/consumers-recognize-biometrics-security-tops-passwords-experian-says · We have to be curious to find out what the outcome would be if the consumers had been informed ...

6ヶ月前

Yet another case of misleading information being spread by tech media

Hitoshi Kokumai · "How Making a Funny Face Could Boost the Security of Face Unlock Features"   https://gizmodo.com/how-making-a-funny-face-could-boost-the-security-of-fac-1846502530 · Low false acceptance rate is one thing and good security is another. · The information those tech media always fa ...

8ヶ月前

Inconvenience behind Convenience of Biometrics

Hitoshi Kokumai · It looks as though nothing is more convenient than putting your finger on a sensor or place your phone in front of your face to get you logged-in. Is it actually as convenient? · Consider the huge inconvenience that citizens would have to face over their lifespan when their biom ...

10ヶ月前

On Ruinous Misperception of Biometrics

Hitoshi Kokumai · Here are some of my recent writings about the misperception on security-ruining biometrics. · ‘Not as secure as claimed’ is one thing. ‘Harmful to security’ is another. · If Only It Were True · Probabilistic Is Human Body, Not Pattern-Matching Algorithm · US Army appears tobe sca ...

10ヶ月前

Videos on Biometrics

Hitoshi Kokumai ·   · Here are three videos featuring the biometrics that brings down security. · Biometrics inCyber Space - "below-one" factor authentication (2 minutes) · Six Reasons toBelieve Biometrics Don't Ruin Cyber Security (4 minutes) · Panel Discussion - Consume ...

11ヶ月前

US Army appears to be scarily misguided

Hitoshi Kokumai · Are you a US citizen? Should it be the case, you could consider talking to the Army or some US watchdog organizations urgently on this matter provided you find the following discussion relevant and compelling. · https://www.defensenews.com/cyber/2020/10/19/us-army-looks-to-use-s ...

1年前

Covid-19: Testing and Washing versus Face Mask

Hitoshi Kokumai · The world’s most famous/infamous politician and his subordinates are reported to have claimed that testing regularly and washing hands frequently are as effective as or even more effective than wearing a face mask for not infecting corona virus, whereas scientists have declared t ...

1年前

Summary and Brief History - Expanded Password System

Hitoshi Kokumai · ‘Easy-to-Remember’ is one thing. ‘Hard-to-Forget’ is another - The observation that Images are easy to remember has been known for many decades; it is not our theme. ·  What we discuss is that ‘images of our emotion-coloured episodic memory’ is ‘Hard to Forget’ to the extent that ...

1年前

What Biometrics Vendors Tell Us versus What NIST Tells Us

Hitoshi Kokumai · I recently posted “Comfortable Biometrics Ecosystem”   In its aftermath, I learnt from one of my LinkedIn contacts that NIST had publicised test results of some biometrics products. · Above is a screenshot of the test result of a biometric product, of which the accuracy is boaste ...

1年前

Archive – Discussions on Digital Identity

Hitoshi Kokumai · I have produced an archive of the discussions on Expanded Password System (EPS) and related issues that I have posted on LinkedIn over the last two years. · - 43 from January through July 2020 · - 51 from January through December 2019 · - 13 from October through December 2018 ...

1年前

Puzzling Perception – Sacrificing Privacy for Decreased Security?

Hitoshi Kokumai · How much of our privacy are we ready to sacrifice in return for DECREASED security, not for increased security? · Biometrics vendors seem to be reluctant to make it clearly known that biometrics and a default/fallback password/PIN are used together in a security-lowering ‘two-en ...

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