ÊTRE CYBER
etrecyber.frby Christophe Mazzola
FR
Free · no account · no tracker

Every idea in the book, turned into actions you can take tonight.

Two hundred and sixteen pages of cybersecurity written for everyone. Because a book nobody reads protects nobody, everything it says is here, freely: 224 concrete actions, 83 tools that work, and a two-minute drill. No account, no email.

Start, freeI have a problem right now
French tax office breach: 393,000 households, income includedWhat was taken, the seven messages coming, and the one rule that defuses all of them.
Something just happened to meA dodgy text, a charged card, a locked account. Let us fix that first.I want to get to it calmlyThe actions in order, most useful first, at your own pace.I am looking for a specific toolTest a password, decode an email, fix a phone’s settings.I just want to see if I would fall for itTwo minutes, one message, real or trap.

What brings you here?

Answer in plain words
My bank card has been chargedWhat to do within the hour, and what the law guarantees you.right awayMy Instagram or Facebook account will not openTake it back before the other person settles in.right awayI clicked the link, and I regret itThe first thirty minutes matter. The rest much less.right awayA photo of me is being shared without my consentTakedown, evidence, complaint: in that order.right awayI lost my phone, or it was stolenLocate, lock, erase, and tell your carrier.right awayI got a text about a parcel, a tax refund or a benefitThe classic one. Let’s read it together, line by line.2 minutes
All situations
224actions, most valuable first
14tools running in your own browser
0 €and nothing to give in return
Être en cybersécurité, par Christophe Mazzola (Éditions Spinelle)

The book says all this. The site makes you do it.

Each of the 224 actions, each of the 83 tools and every glossary term comes out of those fifteen chapters, and links back to the page that explains it. You can apply all of it without ever buying the book. That is deliberate. The book keeps the context, the stories and the real cases.

15chapters
224actions drawn from it
83free tools
€0to apply all of it
The book pagePrint edition, €18
Why it is free

Because a book nobody reads protects nobody. The actions, tools and glossary do not depend on your wallet; the book stays on sale for those who want the substance.

What we do not do

No tracker, no cookie, no font loaded from Google, no affiliate link in the tool comparisons.

In the press
BFM TVA guide accessible to all.ZATAZThis book teaches you to defend yourself better.L’Essor de la SécuritéA reference manual for citizen digital literacy.Slash.frA clear, rigorous guide to sharpen your vigilance.

The route

224 actions · 16 areas · at your pace

The book’s actions, ranked from highest payoff to finest detail. You tick what you do, the site remembers where you are, on your device, with no account and no email. You can stop and pick it up three weeks later.

STEP 01We situate

Three questions: your devices, the people around you, what worries you.

STEP 02We prioritise

Your list, in order. The first five already cover the essentials.

STEP 03We maintain

A monthly nudge, a daily drill if you feel like it.

The tools

83 in total. Everything is computed on your device, nothing is sent
01How long would my password hold?You type, it answers. Nothing leaves the browser.02Has my email address leaked?And if so, which accounts to secure first.03Is this link a trap?Paste it, we tell you where it really goes.04Decode a suspicious emailWe highlight the signals, one by one.05What does the photo I am about to send reveal?Place, date, device, and how to strip them.06A passphrase I will actually rememberSix words. Unbreakable, and memorable.07The right settings, screen by screeniPhone, Android, Instagram, WhatsApp, Google.08Something just happened to meWhat to do, hour by hour.
All the tools

Two minutes of practice

One message a day, taken from what is actually circulating
SMS · today, 09:14+33 7 55 90 12 08

Your parcel no. FR8891204 is on hold. Customs fees of €2.30 remain due. Settle within 48 h: colissimo-suivi-fr.info/regul

Real or trap

One message a day, real or fake, taken from scams actually in circulation. You answer, we show you the clues you missed. No account, no public score.

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