Firefox on a
Linux system running CentOS 7 to version 52.8.0-1 with
firefox. When I opened Firefox afterwards and put google.com in the
address bar, I saw the message below:
Your connection is not secure
The website tried to negotiate an inadequate level of security.
uses security technology that is outdated and vulnerable to attack. An attacker could easily reveal information which you thought to be safe. The website administrator will need to fix the server first before you can visit the site.
Error code: NS_ERROR_NET_INADEQUATE_SECURITY
When I went to another site, wikipedia.org, using
HTTPS, I saw
the same message. I checked to ensure that the web browser wasn't configured to
use a proxy by clicking on the icon with the three horizontal bars at the top,
right-hand side of the browser window and selecting Preferences, then
Advanced, then Network, then Settings. The setting
was "No proxy." I then right-clicked on the "Your connection is not secure"
page and chose View Page Info. When I clicked on the Security
tab, I saw the "Owner" value listed as "This website does not supply
ownership information." In the Technical Details section, I saw "Connection
Not Encrypted" and "The website www.google.com does not support encryption
for the page you are viewing," even though the URL listed was
[ More Info ]