This is an official ODERSA website. Here’s how you know
The official domain

The address of this site ends in odersa.org. Every service the association runs sits on a subdomain of odersa.org and nowhere else. If the address in your browser’s address bar does not end in odersa.org, this site is not ours.

Free, and no account

Everything is open straight away. No sign-up, no account, no password, no subscription, no advertising. Nothing is held back for those who pay, because there is nothing to pay for.

No data collected

This site does not follow you: no tracker, no tracking cookie, no measurement tool built into these pages, and nothing measured on your device. Our host counts requests in aggregate, as any server that answers does: a total, never a profile. You do not have to take our word for it: open your browser’s developer tools, go to the Network tab, and reload the page. You will see the full list of what the site asks for. Everything comes from odersa.org, nothing goes anywhere else.

Free to reuse

The content is published under the CC BY 4.0 licence. You may copy it, translate it, print it and pass it on, for your classes as much as for the people around you, on one condition only: credit ODERSA.

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Press kit


Everything you need to present the project without waiting for us: texts to copy as they are, a logo to download, numbers to recount. Help yourself; that's the house principle.

A close-up of a stack of printed newspapers.
In one sentenceReady to use

“Before You Believe It” teaches, for free and in seven languages, how to verify a piece of information before believing or sharing it: ten reflexes and hundreds of interactive training cases, published under an open licence by an educational non-profit.

In one paragraphReady to use

Everyone shares; almost nobody was ever taught to verify. “Before You Believe It” fills that gap with ten simple reflexes (who is speaking? what source? what date?) and a training room: hundreds of fictional yet strikingly familiar situations (miracle cures, scams, misused images, rigged numbers), where every answer comes with an explanation of the trap. Free, no account, no data collection, offline-capable and printable, the site is published under CC BY 4.0 by ODERSA: teachers and educators can reuse everything, data included.

The numbers, recountable

Up-to-date counters (cases per language, reflexes, languages) are on the Impact & numbers page. They come from the site's public JSON data: you can redo the count yourself, which is rather the point here.

Open Impact & numbers

Logo & visuals

The logotype is available as SVG, light and dark backgrounds. Screenshots are free to use: the whole site is under CC BY 4.0, capture whatever you need.

Press contact

Write to contact@odersa.org: a human replies. For an urgent request, put your deadline in the subject line.

Write to the press contact

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