Terabox website no longer opening on Tails

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1

I have used the Terabox cloud storage successfully on tails before. Even the front page no longer loads and shows a blank page (before I even have option to login). It also won’t open on unsafe browser but does open on Firefox on my main Linux distribution, so it is not down completely. I have not tried Tor-browser on that Linux distribution. Since it won’t load on unsafe browser I doubt its because of Tor.

Is there a known list of differences between unsafe browser and vanilla Firefox that I can look into (to try to figure this out). I don’t remember, if it broke when upgrading from Tails 7.1 to Tails 7.2, but it was working (at one point) when 7.1 was the newest version of Tails.

For what it’s worth I know that terabox should not be trusted, Its like my fourth backup, not the only place I store my data

2

Is it really what’s happening? I tried opening terabox in tor browser and one of the domain it loads resources from seems to have a certificate error.

Screenshot 2025-11-29 at 02-42-14 Warning Potential Security Risk Ahead
Screenshot 2025-11-29 at 02-42-14 Warning Potential Security Risk Ahead906×714 55.8 KB

The domain in question:
https://s3.teraboxcdn.com/

3

I did not get a certification error at any point. I booted up a live linux distro and after installing a bit outdated version of tor-browser from their repo (14.5.5) the website terabox.com opens successfully but after letting it update to newest (15.0.2) it only downloaded a blank page, just like in Tails 7.2. In tails news there is a mention:

Changes and updates

  • Update Tor Browser to 15.0.1.

    Tor Browser 15.0 is based on Firefox 140 and inherits from it several new features that are particularly useful if you use many tabs…

There was also a message about some safety features that seem to be inherited from firefox and irrelevant to this.

So naturally my next step is to look at Tor-browser changelog about series 15 changes. This does not seem to be Tails specific

Pictures available in dropbox

4

For my privacy I removed the dropbox link. Below are the pictures I had behind that link

non working version
non working version736×405 65.9 KB

working version
working version732×445 69.4 KB

terabox opens
terabox opens1366×738 106 KB

random message about security features
random message about security features1197×732 43.3 KB

not working blank page
not working blank page1202×688 11.3 KB

I don’t know if this is related to Wasm (Web assembly) that is discussed about in Torbrowser blog at New Release: Tor Browser 15.0 | The Tor Project I have tried to change some settings at about:config without success.

Note that While I do value my privacy and anonymity I am not at risk if either is compomised. Most importantly I want to hide the fact that I use terabox (and other cloud storage services). I know I tried it with unsafe browser, so not 100% secret, but I want to preserve its secrecy now and in the future.

Also I am not lazy about security after knowing some way to access it. I want to find the most secure way but at this moment I have no way to access it at all on tails