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- **The *Unsafe Browser* is not anonymous.**
The *Unsafe Browser* does not use Tor. The websites that you visit can
see your real IP address.
This is why we recommend that you:
Only use the *Unsafe Browser* to sign in to a network using a captive portal or [[browse trusted web pages on the local network|advanced_topics/lan#browser]].
Close the *Unsafe Browser* after signing in to the network to avoid using it by mistake.
- **The *Unsafe Browser* can be used to deanonymize you.**
An attacker could exploit a security vulnerability in another
application in Tails to start an invisible *Unsafe Browser* and reveal
your IP address, even if you are not using the *Unsafe Browser*.
For example, an attacker could exploit a security vulnerability in
*Thunderbird* by sending you a [phishing
email](https://ssd.eff.org/en/module/how-avoid-phishing-attacks) that
starts an invisible *Unsafe Browser* and reveals your IP
address to the attacker.
Such an attack is very unlikely but could be performed by a strong
attacker, such as a government or a hacking firm.
Only enable the *Unsafe Browser* if you need to sign to a network using a captive portal.
Always upgrade to the latest version of Tails to fix known vulnerabilities as soon as possible.
We have plans to fix the root cause of this problem but it requires
[[!tails_ticket 12213 desc="important engineering work"]].