You are absolutely right and usually, I don't install anything that just arrives on my computer; mainly because I don't want unnecessary junk.

However, I have taken the risk in the past and installed the certificate. So far, I have had no issues (or none that I am aware of) but, following installation, the bloody security message does not go. I still have to close OE via C-A-D. As a result;, I no longer install these as obviously, doing so, does not cure the problem.