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You will then have to restart Firefox by clicking on the 'Restart Now' button. (A newer version may be available now.)Ĭlick on 'Allow'. In the example below, version 0.9.4 of HTTPS Everywhere was used.

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Installationįirst, download the HTTPS Everywhere extension from the official Web site. Some Web sites (such as Gmail) provide HTTPS support automatically, but using HTTPS Everywhere will also protect you from SSL-stripping attacks, in which an attacker hides the HTTPS version of the site from your computer if you initially try to access the HTTP version.Īdditional information can be found at. However, the effort required to monitor your browsing should still be usefully increased. As always, if the browser's lock icon is broken or carries an exclamation mark, you may remain vulnerable to some adversaries that use active attacks or traffic analysis. Please note that some of those sites still include a lot of content, such as images or icons, from third party domains that is not available over HTTPS. It cannot make your connection to a site secure if that site does not offer HTTPS as an option.

Although the extension is called 'HTTPS Everywhere', it only activates HTTPS on a particular list of sites and can only use HTTPS on sites that have chosen to support it. The HTTPS Everywhere extension fixes these problems by rewriting all requests to these sites to HTTPS. For instance, they may connect you to HTTP by default, even when HTTPS is available, or they may fill encrypted pages with links that go back to the unencrypted site. Many sites on the Web offer some support for encryption over HTTPS, but make it difficult to use. HTTP is considered unsafe, because communication is transmitted in plain text. While no tool can protect you completely against all threats to your online privacy and security, the Firefox extensions described in this chapter can significantly reduce your exposure to the most common ones, and increase your chances of remaining anonymous. Know that you can take Firefox on a CD or USB-stick (check our chapter on that issue). It is important to note that using Firefox on someone else's computer or in an Internet caf increases your potential vulnerability.

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You should also never install Firefox unless you get the installation files from a trusted source. Ĭaution: We recommend that you never install an add-on for Firefox unless it is available from the Firefox add-on pages.

Firefox keeps a list of current extensions on its site ( ), or you can browse them by category at. You can add dictionaries for different languages, track the weather in other countries, get suggestions for Web sites that are similar to the one you are currently viewing, and much more. The variety of available extensions is enormous. We will look at some add-ons that are particularly relevant for dealing with Internet security. Flash movies, Java applications).įor the topics covered in this book we are only going to need extensions.

Plugins help Firefox handle things it normally can't process (i.e.

Themes change the appearance of Firefox.

Extensions add functionality to Firefox.

Otherwise, an add-on might share information about you without your knowing, keep a record on the sites you have visited, or even harm your computer. Before you install any add-on, keep in mind to choose add-ons from trusted sources.

You can also add extra capabilities or change the way Firefox behaves by installing add-ons, small additions that extend Firefox's power.įirefox extensions can pimp your browser, but they can also collect and transmit information about you. When you first download and install Firefox, it can handle basic browser tasks immediately.

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