Proton

プライバシーガイド

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We use end-to-end encryption to secure your emails. Here's what end-to-end encryption means, and how it protects you.
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When you use DNA genetic testing services like 23andMe or AncestryDNA, your data can be used in ways you can’t always control.
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Despite its popularity, SMS is a dangerously insecure way to send text messages. We examine why and discuss what you can do about it.
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SMTP、IMAP、POP3は、メールクライアントがメールを送受信するために使用するプロトコルです。詳しく解説します。
en
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Fingerprinting is a devious way to identify you on the internet and can be very hard to prevent
What is personally identifiable information
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What is personally identifiable information, and how can it be used against you? We go over what PII stands for, and how you can protect it.
how to change your email address
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まだ恥ずかしいメールアドレスを使い続けているなら、変更する時です。5つの簡単なステップでメールアドレスを変更する方法を学びましょう。
Safer Internet Day
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Follow our six easy tips to stay safe and private online this Safer Internet Day. You can also share this guide with your friends and family.
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Learn the different ways to send an email to multiple email addresses with our explainer on To, CC, and BCC.
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What exactly is the cloud, how does it work, and is it secure?
Data Privacy Week
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For Data Privacy Week this year, share our games, ideas, and top tips with your friends and family to help them protect their online data.