Lewis Gilchrist (@lewis-dev)

The bot problem that CAPTCHA can't solve, and proof of human can

reCAPTCHA asks if you look human. Proof of human asks if you're unique. Different questions, different attack surfaces. Here's why it matters.

7 min readdevabkk.hashnode.dev

Oct 1

How proof of human technology works

How does proof of human work? A plain, step-by-step look at how it proves you are a real, unique person without revealing who you are.

8 min readdevabkk.hashnode.dev

Sep 17

The real reason online stores make you verify you're human twice now

CAPTCHA fatigue at checkout is real. Here is why e-com verification is increasing, the bot fraud numbers look like, and where merchants are moving.

7 min readdevabkk.hashnode.dev

Aug 24

The re-identification problem that breaks "anonymized" data

Anonymized data is not anonymous. Here is why re-identification works, what k-anonymity guarantees, and the cases that proved it.

7 min readdevabkk.hashnode.dev

Aug 13

Hashing is not the same as anonymizing, and the difference matters

Anonymized data is not anonymous. Here is why re-identification works, what k-anonymity guarantees, and the cases that proved it.

8 min readdevabkk.hashnode.dev

Aug 13

Lewis Gilchrist

About

Available for

Lewis Gilchrist's blogs

The bot problem that CAPTCHA can't solve, and proof of human can

How proof of human technology works

The real reason online stores make you verify you're human twice now

The re-identification problem that breaks "anonymized" data

Hashing is not the same as anonymizing, and the difference matters

Lewis Gilchrist

About

Available for

Lewis Gilchrist's blogs

The bot problem that CAPTCHA can't solve, and proof of human can

How proof of human technology works

The real reason online stores make you verify you're human twice now

The re-identification problem that breaks "anonymized" data

Hashing is not the same as anonymizing, and the difference matters

Lewis Gilchrist

About

Available for

Lewis Gilchrist's blogs

The bot problem that CAPTCHA can't solve, and proof of human can

How proof of human technology works

The real reason online stores make you verify you're human twice now

The re-identification problem that breaks "anonymized" data

Hashing is not the same as anonymizing, and the difference matters

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Lewis Gilchrist

About

Available for

Lewis Gilchrist's blogs

The bot problem that CAPTCHA can't solve, and proof of human can

How proof of human technology works

The real reason online stores make you verify you're human twice now

The re-identification problem that breaks "anonymized" data

Hashing is not the same as anonymizing, and the difference matters