プライバシーガイド
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Android is one of Google’s most important tools for collecting data on users.
This guide will help you improve your privacy on Android devices.

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適切なウェブブラウザを使用することは、プライバシーを保護するために不可欠です。2025年にオンライン追跡からあなたを守る最も安全なウェブブラウザのオプションをご覧ください。

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Activate Touch ID, Face ID, or PIN protection in the Proton Mail iOS app for
added protection against malware and warrantless device searches.
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This post explains the steps you should take to prevent your data from being
exposed in a breach, including using aliases and end-to-end encryption.

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Learn what PGP encryption is and how it works, how secure PGP is, and the
simplest way to secure your emails with PGP encryption.

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Proton Mail supports independent journalism. Our encrypted messages let
journalists protect their sources and whistleblowers safely report wrongdoing.
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In this article, we tell you how to create a strong password and the best way to
keep it safe.
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A strong password doesn’t have to be 30 characters long. But if you’re using an
eight-character password, you have a good chance of being hacked.
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Increase your online privacy with this one-stop guide. It includes simple steps
to keeping companies and hackers away from your data.

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We’ve done some research and put together a list of Black Friday email scams
that tend to crop up around this time of year. If you know their strategies,
it’s much easier to protect yourself and your online accounts.

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The NSA has long argued that surveillance is necessary for security. Here's why
that argument is wrong and why privacy is a prerequisite for security.