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IntegrAuth Academy

Identity, security and practical AI — free, from zero. Byte-sized lessons, real diagrams, hands-on labs, zero fluff. Two programs, each with its own exam and certificate.

20 tracks 241 lessons 242 hands-on labs 230+ diagrams 100% free

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Identity & API Security Track 2 · Modern Authentication
0/166 lessons read
AUTHENTICATION · LESSON 13

The big picture

Maya started this track with one password on a dozen sites. Now that password is gone. What replaced it is safer and easier. Here is the whole story before the quiz.

The story you just lived

First we removed the password. In passkeys & WebAuthn, Maya swapped the shared secret for a key pair. The private key is never sent to a site, so there is nothing to phish.

A device can be lost. MFA enrollment & factors added a second factor. Safe account recovery then built the way back in. Then adaptive risk-based MFA challenged only strange sign-ins. For a risky action, step-up & assurance asked for fresh proof.

Attackers hit the login with stolen passwords. Bot detection & CAPTCHA made that costly. Breached-password detection refused leaked passwords. For business customers, enterprise SSO & home-realm discovery sent each user to their own company login.

Then the story moved past login. Sessions, cookies & sign-out showed three sessions on three clocks. Native-to-web SSO carried a sign-in from an app to a web page. Magic links & email OTP traded the password for the inbox. Identity verification proved the real person.

Lonely passwordreused · breached · phishableRemove the secretpasskeys · MFA enrollAdapt the frictionadaptive · step-up · bots · breachedExtend the sign-inSSO · sessions · native↔web · magic · IDVEach stage answers a real attack — phishing, credential stuffing, breach dumps, session theft.
Figure — Four phases of a modern login. Remove the shared secret. Use friction only where risk earns it. Then carry one trusted sign-in across every app and screen.

The threads that tie it together

Remove the shared secret

Passkeys remove it. Leak checks block stolen ones. Magic links still carry a risk, because they lean on an emailed secret.

Friction only when earned

Add MFA only when needed. Adaptive MFA challenges odd logins. Step-up asks before risky actions. Bot detection shows a CAPTCHA only for robotic traffic.

The API is the real gate

The client only asks for a factor. The server must check it, as an API gate. Sessions live or die on the server, not in the cookie.

One sign-in, many places

Enterprise SSO reaches the customer's IdP. Native-to-web SSO links app and browser. Single logout does the same job in reverse.

Why it matters

You now know why a passkey cannot be phished. You know when to challenge and when to stay out of the way.

Where these ideas go next

Token Security shows what every sign-in hands out and how APIs check it. To see the attacks these defenses answer, read adversary-in-the-middle phishing. To harden recovery, read account recovery. To teach users to spot fake messages, share Spotting phishing and fake logins.

Ready to prove it stuck? The cheat sheet & pop quiz is next.