Guides

Comprendre les fuites de données, sans paniquer

Des guides pratiques pour évaluer votre risque réel et savoir exactement quoi faire, dans le bon ordre.

My email is in a leak — should I really be worried?

Your address appears in a data leak? Don’t panic. Here’s how to calmly assess the real risk based on what was exposed.

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What to do in the 24 hours after a leak: the priority checklist

Your email leaked? Here are the steps to follow in the right order, from the first 24 hours to lasting measures, to contain the risk without panicking.

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Why your mailbox is the first thing to secure

Your email is the key to all your other accounts. Here’s why it’s attackers’ number one target and how to lock it down first.

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One single email address for everything? Mistake #1, and how to compartmentalize your emails

Using the same address everywhere makes every leak worse. Discover the email compartmentalization strategy to contain the damage.

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One single password for everything? Mistake #2, and how to compartmentalize your passwords

Reusing the same password turns a leak into a chain hack. Here’s why, and how to have a unique password everywhere without effort.

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Why a password manager has become essential

No one remembers 40 unique passwords. Here’s why a password manager is now the foundation of good security hygiene.

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What is k-anonymity, and why your password never leaves us

How do you check if a password has leaked without ever revealing it? K-anonymity explains it — a privacy guarantee, explained simply.

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Protecting your whole family online: the guide for parents

Your children have their own accounts, your parents are less comfortable with security. Here’s how to protect the whole family from data leaks.

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Leak, breach, hack: what’s the difference, and why it changes your reaction

Leak, breach, hack: these words don’t mean the same thing. Understanding the difference helps you react appropriately, without overreacting or denial.

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How long does your data stay in circulation after a leak?

Is an old leak really harmless? No: data circulates and recombines for years. Here’s why regular rotation is essential.

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Credential stuffing: why a leak at X can get your account at Y hacked

Why can a leak at one site compromise your accounts elsewhere? Because of credential stuffing — a simple explanation of the most common attack.

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