What Is Tails OS? The Amnesic, Anonymous Operating System Explained

Tails routes everything through Tor and forgets everything when you shut it down. Here's what that actually means and why people use it.

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Tails (The Amnesic Incognito Live System) is a free, Debian-based operating system built around one goal: leave no trace and protect your identity online. It runs entirely from a USB drive, forces all internet traffic through the Tor network, and by design forgets everything the moment you shut it down — nothing is written to the host computer’s hard drive unless you explicitly set up encrypted persistent storage.

What makes it different from a normal OS

Who actually uses Tails

What Tails does not do

It’s worth being precise: Tails protects against a computer or network retaining a record of your activity, and it anonymizes your network traffic’s origin through Tor. It does not make you invincible — logging into a personal account still identifies you to that service, and operational mistakes (like sharing identifying details) undermine anonymity regardless of the OS underneath.

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Frequently asked questions

Is Tails OS legal to use?

Yes. Tails is free, open-source privacy software, legal to download and use in the vast majority of countries. Some countries do heavily restrict or monitor Tor usage — check local law if you're in a jurisdiction with internet censorship.

Does Tails make me completely anonymous online?

It significantly improves anonymity by routing traffic through Tor and leaving no trace on the machine, but logging into personal accounts or sharing identifying information still identifies you to that specific service, regardless of the OS.

Does Tails save anything between sessions?

Not by default — every boot starts completely fresh. You can optionally set up encrypted persistent storage on the same USB drive if you want specific files or settings to carry over.