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#authentication

User authentication mechanisms

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Should a SaaS Password Recovery Flow Use Email API or SMS OTP?

Should a SaaS Password Recovery Flow Use Email API or SMS OTP?

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7 min read
Patient Portal Login With Convenient Authorization and Explicit Data Consent

Patient Portal Login With Convenient Authorization and Explicit Data Consent

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8 min read
Node.js Passwordless Phone Login: SMS OTP Resend Cooldowns and Attempt Caps

Node.js Passwordless Phone Login: SMS OTP Resend Cooldowns and Attempt Caps

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7 min read
Authentication Audit Trails: Correlating Risk Events with Session Lifecycle Actions

Authentication Audit Trails: Correlating Risk Events with Session Lifecycle Actions

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7 min read
I Found a P0 Auth Bypass by Testing What null Does to BCrypt

I Found a P0 Auth Bypass by Testing What null Does to BCrypt

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1 min read
Passkeys Instead of Passwords: State of Play and Pitfalls

Passkeys Instead of Passwords: State of Play and Pitfalls

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4 min read
Passkey Signups Still Need Email Checks

Passkey Signups Still Need Email Checks

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4 min read
Failed SMS Login Codes: Polling Delivery Before a Backup Email Handoff

Failed SMS Login Codes: Polling Delivery Before a Backup Email Handoff

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7 min read
"Error Loading Dashboard" with Valid Session on First Visit: The Cookie Wasn't There Yet

"Error Loading Dashboard" with Valid Session on First Visit: The Cookie Wasn't There Yet

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4 min read
How to Compare Direct SMS Send and OTP APIs for Simple 2FA Login

How to Compare Direct SMS Send and OTP APIs for Simple 2FA Login

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7 min read
How I Found a postMessage Origin Bypass in an OAuth SDK

How I Found a postMessage Origin Bypass in an OAuth SDK

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5 min read
JWT auth without the confusion

JWT auth without the confusion

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3 min read
Why OTP Verification Fails (and How to Fix It)

Why OTP Verification Fails (and How to Fix It)

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5 min read
Designing SMS Login Flows for Roaming Users

Designing SMS Login Flows for Roaming Users

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5 min read
Idempotent Signup Emails in REST APIs

Idempotent Signup Emails in REST APIs

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4 min read
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