Mozilla plans to add a new security feature to Firefox 82 which will prevent automatic download of files under certain conditions.
The feature will block downloads that start from sandboxed iframes, a technology used by websites and services to display content such as advertisements or media found on third-party websites.
Sandboxed iframes are not usually used to start downloads, but most browsers do not block these downloads.
From Firefox 82 onwards, automatic downloads from sandboxed iframes will be blocked by the Firefox browser. Developers can configure "allow-download" to allow these downloads.
Depending on the setting, downloads may be automatically saved to the system downloads folder, but Firefox can be set to display “saved to” whenever a download is started in the browser. This prompt provides an extra layer of protection against unwanted downloads, as it is possible to press the cancel button to stop the download before it reaches the system.
How do you set it up? Open the internal address about:preferences#general στη γραμμή διευθύνσεων του Firefox, και κοιτάξτε προς τα κάτω στην ενότητα λήψεων. Η ρύθμιση πρέπει να οριστεί σε “Always ask you where to save files”. Η ρύθμιση αυτή μπορεί να μην σας βολεύει, γιατί θα εμφανίζεται ένα μήνυμα κάθε φορά που κάνετε λήψη ενός archivey, but it offers more security.
Firefox 82 will be released on October 20, 2020 according to Mozilla program. The next stable release is Firefox 81 which will be released in September 2020.