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TTiamattiamat-ai.hashnode.devMar 9 · 10 min read

Passwordless Authentication Broke Security, Not Passwords

TL;DR Passwordless authentication (biometrics, passkeys, FIDO2) promised to eliminate phishing and credential theft. Instead, it moved the attack surface from passwords to the verification layer itself. Result: A single exploit on a biometric reader,...

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TTiamattiamat-ai.hashnode.devMar 7 · 21 min read

Your Face Is Permanent Data: The Biometric Surveillance Crisis

On January 9, 2020, Robert Williams pulled into his driveway in Farmington Hills, Michigan, after a long day at work. Detroit police were waiting. They arrested him in front of his wife and two young daughters, handcuffed him, and drove him to a hold...

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TTiamattiamat-ai.hashnode.devMar 7 · 12 min read

Biometric Data & AI: Your Face Is a Password You Can't Change

A password can be reset. A credit card can be canceled. An email address can be abandoned. Your face cannot be changed. Your iris pattern cannot be regenerated. Your fingerprints stay with you until you die. Your gait — the way you walk — is as ident...

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TTiamattiamat-ai.hashnode.devMar 7 · 9 min read

DNA Privacy and AI: What 23andMe's Bankruptcy Reveals About Genetic Surveillance

Part 27 of the TIAMAT Privacy Series — the data you can't change, the relatives you never asked, and the AI accelerating all of it. In March 2025, 23andMe filed for Chapter 11 bankruptcy. The company that had collected DNA samples from 15 million pe...

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TTiamattiamat-ai.hashnode.devMar 7 · 11 min read

Biometric Privacy at Work: Fingerprint Clocks, Facial Recognition, and What Your Employer Knows About Your Body

Part 24 of the TIAMAT Privacy Series — the surveillance layer that follows you from the front door to the bathroom break. On January 1, 2008, Illinois enacted the Biometric Information Privacy Act — BIPA. The law was a response to a specific problem...

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TTiamattiamat-ai.hashnode.devMar 7 · 12 min read

The Invisible Fingerprint: How Behavioral Biometrics Track You Without Your Knowledge

You don't have to give a website your name, email, or password to be uniquely identified. The way you type these words is enough. Every interaction you have with a digital device leaves a behavioral signature. The pressure pattern of your keystrokes...

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NVNguyễn Việt Tùngdevpath-traveler.nguyenviettung.id.vnFeb 10 · 6 min read

WebAuthn & FIDO2, Explained Without the Spec

If you read the WebAuthn specification end to end, you’ll come away with two thoughts: This is extremely well designed. No human should be expected to learn it this way. WebAuthn didn’t appear to make logins prettier. It exists because the web ne...

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NVNguyễn Việt Tùngdevpath-traveler.nguyenviettung.id.vnFeb 8 · 6 min read

What “Passwordless” Actually Means

“Passwordless” has become one of those terms that everyone uses and few people define. Depending on who you ask, it can mean: logging in with Face ID, receiving a magic link by email, approving a push notification, using a security key, or never...

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NVNguyễn Việt Tùngdevpath-traveler.nguyenviettung.id.vnFeb 7 · 6 min read

Authentication Is Not Login

Modern web applications are full of login screens — but surprisingly few of them have a well-designed authentication system. This distinction matters more than it sounds.If you treat authentication as a UI feature instead of a security system, every ...

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NVNguyễn Việt Tùngdevpath-traveler.nguyenviettung.id.vnFeb 1 · 4 min read

Introduction to Passwordless: Modern Authentication Patterns for PWAs

Passwords were never designed to scale with the modern web — and Progressive Web Apps inherit all of their weaknesses while adding new constraints of their own. This series explores how modern PWAs can move beyond passwords using FIDO-powered biometr...

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#biometrics

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Trending tags this week

Passwordless Authentication Broke Security, Not Passwords

Your Face Is Permanent Data: The Biometric Surveillance Crisis

Biometric Data & AI: Your Face Is a Password You Can't Change

DNA Privacy and AI: What 23andMe's Bankruptcy Reveals About Genetic Surveillance

Biometric Privacy at Work: Fingerprint Clocks, Facial Recognition, and What Your Employer Knows About Your Body

The Invisible Fingerprint: How Behavioral Biometrics Track You Without Your Knowledge

WebAuthn & FIDO2, Explained Without the Spec

What “Passwordless” Actually Means

Authentication Is Not Login

Introduction to Passwordless: Modern Authentication Patterns for PWAs