What Is Authentication? | Marketing Dictionary
DICTIONARY · WEB

What is authentication?

Verifying who a user or system is.

In plain English

Authentication answers the question who are you. A password, a code from an app, a fingerprint, a key. The system checks the evidence and decides whether to believe the claim.

It is distinct from authorisation, which decides what you are allowed to do once identity is established. Authentication is the door, authorisation is which rooms you can enter.

What to know

Something you know, have or are
Passwords, devices and biometrics. Combining two of these is what two-factor authentication means.
Two-factor is the biggest single win
Most account compromises involve reused or leaked passwords. A second factor stops nearly all of it.
Sessions keep you signed in
After authenticating, a session or token maintains the state so you are not asked on every page.
Machines authenticate too
API keys and tokens are how one system proves its identity to another.

Why it matters

Marketing teams hold access to advertising accounts, analytics, the website and the mailing list. Those are among the most damaging accounts a business can lose, and they are frequently protected by a shared password in a document. Authentication hygiene is unglamorous and cheap insurance.

Common mistakes

×Sharing one login across a team instead of giving individual access.
×Skipping two-factor authentication on advertising and hosting accounts.
×Leaving access active for agencies and staff who have moved on.
×Storing credentials in a spreadsheet or chat history.

FAQs

What is the difference between authentication and authorisation?

Authentication proves identity. Authorisation decides what that identity is permitted to do.

Do I really need two-factor on marketing accounts?

Yes. Advertising accounts with stored payment methods are actively targeted, and recovery after a takeover is slow and painful.

WRITTEN BY TARIQ SALLAM
Marketing Consultant. Entrepreneur. Content Creator.

I'm a marketing consultant, entrepreneur and content creator. I help businesses grow through practical marketing, websites, SEO, content and AI.

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