In Tails, an administration password (also called *root password* or *amnesia password*) is required to perform system administration tasks.For example:
<p>Running Tails inside a virtual machine has [[various security implications|virtualization#security]]. Depending on the host operating system and your security needs, running Tails in a virtual machine might be dangerous.</p>
The content of the USB stick is lost in the operation, but an attacker might still be able to tell that Tails was installed on that USB stick using [[data recovery techniques|doc/encryption_and_privacy/secure_deletion]].
This can be achieved using a technique called [[!wikipedia cold boot attack]]. To prevent such attacks, the data in RAM is overwritten by random data when you shut down Tails.