When trying to go to https://www.pfizerpapconnect.com, the Firefox web browser claims there is a "Potential Security Risk" and pops up a page recommending to not proceed.

Is there a real security issue with this site, and if so, what is it?

  • 1
    it does not happen to me
    – shikida
    Jul 2 '21 at 13:07
  • 1
    @Ben Hello! Maybe the detailed error message from Firefox might be useful to the readers.
    – pri
    Jul 2 '21 at 13:09
  • The server is not properly configured. It is missing intermediate certificates. Sometimes browsers successfully work around it (Chrome), sometimes not (Firefox with fresh profile). See SSLLabs which shows "This server's certificate chain is incomplete. Grade capped to B." Jul 2 '21 at 13:11