Web-server – Need Explanation of User Agent

I think the user dflaw found it. It's the software from Genieo. We did some tests and contacted them. All results are published here.

Your proxy provider is changing your string. There's no way that they are not. It's possible that to person you spoke to about this is unaware.

The real giveaway here is that it does not happen on TLS/SSL connections. This is because your provider cannot change this data, because they can't read it in order to change it.

It's also possible that they have a bug in their system that is performing this change, and they just don't realise it.