For long I didn’t know that there even existed an encrypted version of Wikipedia, since you can’t reach it by simply adding an s after http. The regular address that you are used to looks like this:
And the secure address looks like this:
So it’s a bit lot longer and troublesome to access. However, that mustn’t be a problem. If you are using DuckDuckGo as your search engine and has set it to search through SSL, it will automatically change the outgoing Wikipedia links to the encrypted version. If you would like to have the encrypted Wikipedia as an option in the search bar in Firefox, you can add an entry for it with this add-on.
If you are curios about DuckDuckGo, read my short blog post about it: