For example, thanks to this confinement, even if an attacker manages to exploit a security vulnerability in *Tor Browser*, they wouldn't be able to access all the content of your Persistent Storage.
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To change the security level, click on the [[!img security-level.png class="symbolic" link="no"]] icon on the right of the address bar and choose <span class="guilabel">Advanced Security **Settings…</span>**.
To change the security level, click on the [[!img security-level.png class="symbolic" link="no"]] icon on the right of the address bar and choose **Settings…**.
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To switch to a new identity, choose <span class="menuchoice"> <span class="guimenu">[[!img lib/open-menu.png alt=""Open Application Menu" class="symbolic" link="no"]]</span> ▸ <span class="guimenuitem"> ▸ **New Iidentity</span></span>**.
