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I've been getting intermittent "Broken Encryption" messages on AskUbuntu's website. So far, I've only seen this on www.askubuntu.com and www.blender.stackexchange.com, and it's not always there.

Is this a problem with StackExchange, or is it a problem on my end?

Broken Encryption

Edit: To make the problem even more confusing, the error disappeared after I reloaded the website.

  • It says the encryption used AES 128 GCM, which, according to CloudFlare at least is pretty strong - and rather modern (TLS 1.2 only). Are you behind a company proxy or something? – muru Jan 5 '16 at 21:12
  • I'm just connected to my home Wi-Fi network with no proxy or VPNs or anything like that. I've been using the same settings for almost 2 years, and I've never seen anything like this. I'll keep my eye on it to see if it happens on any other websites. – SuperSluether Jan 5 '16 at 22:01
  • Related to meta.stackexchange.com/q/272407/270345, perhaps? – muru Jan 6 '16 at 5:29
  • Not quite. Firefox does have a warning, but I can still access the website. The message is in the same area as the mixed content blocker. – SuperSluether Jan 6 '16 at 13:27
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I figured it out! I manually configured Firefox to block all mixed content. (by default, only active content is blocked) When I allow mixed display content (images) it gives me the mixed content message. When I block mixed display content, it gives me the weak encryption message.

In other words, it's a mixed content problem, which is server-side. Sorry for the stupid question, I guess I'm a little paranoid.

  • Fine fine we let you get away with it this time but do not dare to start asking questions about rootkits and virusscanners for linux :+) – Rinzwind Jan 9 '16 at 10:24
  • @Rinzwind, I only asked this question here, because currently I'm only seeing this message on StackExchange websites. ;) – SuperSluether Jan 9 '16 at 15:31

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