É fortemente desaconselhado instalar novos add-ons no Navegador Tor, pois eles podem comprometer a sua privacidade e segurança.

A instalação de novos complementos pode afetar o Navegador Tor de maneiras imprevistas e potencialmente tornar sua impressão digital do Navegador Tor exclusiva. If your copy of Tor Browser has a unique fingerprint, your browsing activities can be deanonymized and tracked even though you are using Tor Browser.

Basically, each browser's settings and features create what is called a "browser fingerprint". Most browsers inadvertently create a unique fingerprint for each user which can be tracked across the internet. Tor Browser is specifically engineered to have a nearly identical (we're not perfect!) fingerprint across it's users. This means each Tor Browser user looks like every other Tor Browser user, making it difficult to track any individual user.

There's also a good chance a new add-on will increase the attack surface of Tor Browser. This may allow sensitive data to be leaked or allow an attacker to infect Tor Browser. The add-on itself could even be maliciously designed to spy on you.

O Navegador Tor já vem instalado com dois add-ons — HTTPS Everywhere e NoScript — e adicionar qualquer outra coisa poderia comprometer seu anonimato.

Want to learn more about browser fingerprinting? Here's an article on The Tor Blog all about it!