Each time you fullscreen a video in Firefox, a warning concept appears for a couple seconds and then slides off the display. Although its key reason is for safety, you may want to disable the popup if you uncover it irritating.
What Is the Fullscreen Warning, and Why Is It Significant?
All present day browsers use the Fullscreen API to existing wanted content—such as videos, images, and online games—using the overall monitor, void of other person interface elements. When enabled, a small warning information momentarily seems at the prime of the site, notifying you it has been brought on. This is the exact same features when you check out a YouTube movie in fullscreen method.
Though it can be aggravating at times—and prior to you go ahead and disable the message altogether— it’s crucial to review its purpose and how it assists reduce phishing attacks.
The only real restriction for builders working with the API is that in buy to induce fullscreen manner, the person will have to initiate it with a simply click or a keypress (keyboard shortcut). The reason this affliction exists is to stop sketchy sites from quickly loading a phishing rip-off into fullscreen when traveling to a web site.
However, this characteristic is prone to a incredibly ingenious phishing attack. Attackers can use the API to display you a pretend variation of a website in fullscreen method that looks incredibly equivalent to the actual deal. All you want to do is click a authentic-seeking link, and the API loads fullscreen manner with what appears like a functioning internet browser.
In this case, when the faux site goes to fullscreen method, the browser flashes a warning message notifying you it has been brought on. If you overlook the warning, you may believe it is a legit web-site.
If you want to know far more about how the HTML5 Fullscreen API can be utilised in phishing assaults, Feross, a programmer who very first identified this, goes into good detail—and even has a working instance of a fake Bank of The usa site—on their website.
So, now that we obtained all that out of the way, if you however want to disable the warning—or just reduce the time it will take to disappear—let’s continue on.
How to Disable the Fullscreen Warning Information
To go forward and disable the fullscreen warning concept, we’ll have to have to obtain the Innovative Tastes webpage, which is very similar to enabling flags in Chrome.
Warning: Firefox stores each location on this web page, so you have to be cautious when tinkering close to here. Altering these options can be unsafe to the steadiness and security of the browser. You should only keep on if you are self-assured and confident of what you are undertaking.
Type about:config into the handle bar and then hit the Enter crucial. The page hundreds with a warning about the impacts of modifying these tastes and the influence it can have on Firefox. Click on the “Accept the Risk and Continue” button.
In the lookup bar, kind total-display screen-api.warning.timeout into the research bar and simply click the pencil icon subsequent to the result to alter the worth of the desire.
The number you enter is the quantity of time in milliseconds until the warning starts to vanish. Preserve in intellect that anything less than 500 scarcely appears following fullscreen is initiated. For security reasons, if you want to be capable to see the warning when entering the fullscreen manner, you should really set anything all over 500 milliseconds. If not, enter . Simply click the checkmark when you end.
Just after you change the benefit in the setting, you really don’t have to have to restart Firefox. The up coming time you click on a video clip into fullscreen mode, the new timeout will be utilized.
To revert again to the default timeout, head back to the “Advanced Preferences” webpage and click the reset arrow on the considerably correct of the comprehensive-monitor-api.warning.timeout setting.
As described right before, there are security dangers to totally disabling the warning concept as some regarded phishing scams can prey on this vulnerability. While this threat nevertheless exists, it’s almost certainly sensible to keep a timeout delay that notifies you when anything triggers fullscreen method in the browser.