• Login
    • Search
    • Categories
    • Recent
    • Tags
    • Users
    • Groups
    • Rules
    • Help

    Do more on the web, with a fast and secure browser!

    Download Opera browser with:

    • built-in ad blocker
    • battery saver
    • free VPN
    Download Opera

    12.17 shows a security issue on nearly every web page

    Opera for Windows
    8
    18
    6148
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • oldcelt
      oldcelt last edited by

      Why does 12.17 keep showing almost every page as a security issue? Not just every page but every function on the page?

      More importantly, how can I stop it doing that?

      Reply Quote 0
        1 Reply Last reply
      • leocg
        leocg Moderator Volunteer last edited by

        What exactly is the warning?

        Reply Quote 0
          1 Reply Last reply
        • oldcelt
          oldcelt last edited by

          In reply to leocg, here's an example of one of the warning pages. They even come up when trying to access this forum site! I've reverted to IE for now which has no such problem. I've also tried firefox which also has no such problems.

          Here's the example:-

          A page with 3 tabs appears.

          Example Warning tab:
          The server's certificate chain is incomplete, and the signer(s) are not registered. Accept?
          Server name:
          Any of dozens of pages I've accessed regularly for years - e.g. my.ovoenergy.com

          Example Security tab:
          The certificate for "my.ovoenergy.com"is signed by the unknown Cerificate Authority "DO_NOT_TRUST_FiddlerRoot". It is not possible to verify that this is a valid certificate.
          Certificate summary
          Holder: my.ovoenergy.com, DO_NOT_TRUST
          Issuer: DO_NOT_TRUST_FiddlerRoot, DO_NOT_TRUST
          Expires: 07/06/2024
          Encryption protocol
          128 bit ARC4 (RSA/MD5)

          Details tab:
          Only the URL is given - no further details

          What a pity we can't upload an image to these comments!

          Reply Quote 0
            1 Reply Last reply
          • linuxmint7
            linuxmint7 last edited by

            Have you checked to see if your systems clock is set to the correct time, date and time zone ?.

            EDIT: Oh, and here's one of many image hosting sites (below). Just post the link here once you've uploaded a picture there.

            http://tinypic.com/

            Reply Quote 0
              1 Reply Last reply
            • Deleted User
              Deleted User last edited by

              @oldcelt

              You should disable your Fiddler-proxy 😉

              And/Or disable in Fiddler Options
              Tab HTTPS

              Decrypt HTTPS traffic

              and Button Remove Interception certificates

              or check Operas Network Proxy settings
              opera:config#Proxy

              Reply Quote 0
                1 Reply Last reply
              • oldcelt
                oldcelt last edited by

                I've never bheard of Fiddler be3fore this problem (not in this context anyway) and I don't use a proxy.

                System clock is correct in every respect.

                Why do IE and Firefox work perfectly - that wouldn't happen if it had anything to do with my system, would it? Same applies if I was using a proxy - all browsers would be coming up with the same problem.

                Reply Quote 0
                  1 Reply Last reply
                • oldcelt
                  oldcelt last edited by

                  Thanks for the tinypic link.
                  URL for the warning message picture:-
                  [](http://tinypic.com?ref=35buupw" target="_blank)

                  Reply Quote 0
                    1 Reply Last reply
                  • Deleted User
                    Deleted User last edited by

                    @oldcelt

                    I've never bheard of Fiddler be3fore this problem (not in this context anyway)

                    Oh yes, a ghost must have installed such software 😉

                    I don't use a proxy.

                    Well, the security warning of Opera is about Fiddlers proxy certificate! This occurs if Fiddler is running and intercepts HTTPS connections!

                    I tested it minutes before.

                    Why do IE and Firefox work perfectly

                    Because they don't use the Fiddler Addon?

                    that wouldn't happen if it had anything to do with my system, would it?

                    But you know better.

                    May be you have malware on your system tricking you with a Fiddler "DO_NOT_TRUST_FiddlerRoot" certificate.

                    Search for BrowserSafe, Browser Safeguard or Safeguard

                    Fix it yourself! =:/

                    Reply Quote 0
                      1 Reply Last reply
                    • oldcelt
                      oldcelt last edited by

                      I pasted the link into my comment but it didn't appear after I posted it!

                      Reply Quote 0
                        1 Reply Last reply
                      • Deleted User
                        Deleted User last edited by

                        I pasted the link into my comment but it didn't appear after I posted it!

                        paste the URL between Backticks `....` and it will apear

                        Reply Quote 0
                          1 Reply Last reply
                        • A Former User
                          A Former User last edited by

                          I fixed your image post's syntax.

                          Reply Quote 0
                            1 Reply Last reply
                          • Deleted User
                            Deleted User last edited by

                            oldcelt has a infection on his system (some unwanted OpenCandy software), which is installed with some freeware programs.

                            Reply Quote 0
                              1 Reply Last reply
                            • blackbird71
                              blackbird71 last edited by

                              @angiesdom is probably right on target. Fiddler is ostensibly a web debugging proxy tool that is sometimes used for debugging, security testing, performance testing, and web session manipulation. It is a man-in-the-middle software that stands between the user's application and whatever he sends/receives on the web. It has the capability of generating its own certificates, and this is what you're probably seeing the error message in relationship to. If everything going to the web passes through Fiddler, then its certificates are inserted in every case... and if the certs are problematic, then all the sites you visit will create the cert error.

                              The problem is that if you or some security/testing software you may have just installed didn't install Fiddler, something else did. The ominous overtone is that as a proxy, it stands between you and all your web traffic... meaning, if it's set by whomever for misuse, it can be set to intercept and log/abuse every piece of data moving on your web connection, http or https.

                              In all likelihood, something you did (installed, clicked on, updated, etc) just before the warnings started appearing was involved in the issue. The odds are you've been infected with something else that simply employs Fiddler as a data-acquisition/manipulation tool related to your browsing.

                              Reply Quote 0
                                1 Reply Last reply
                              • oldcelt
                                oldcelt last edited by

                                All sound advice: the problem is to identify the malware if, indeed, that's what it is.
                                Opera was a fresh installation downloaded from the Opera website a few days ago.
                                I have AVG Pro running permanently.
                                I've done a scan with AVG - full system.
                                I've done a scan with Spybot S&D.
                                I've run BitOptimiser.
                                Nothing is being identified!

                                Reply Quote 0
                                  1 Reply Last reply
                                • blackbird71
                                  blackbird71 last edited by

                                  At this stage, if it were me, I'd check the system with specialty tools like Malwarebytes and AdwCleaner. If that seemed to lead nowhere, I'd consider visiting a specialized free security helps forum like DSLR Security Cleanup or Malwarebytes and getting some assistance there - they'll probably want you to install some added analysis tools that their experts will need to guide you in using.

                                  Reply Quote 0
                                    1 Reply Last reply
                                  • A Former User
                                    A Former User last edited by

                                    I would also search the system registry for any mention of "Fiddler".
                                    If it comes up at all, it's almost certainly on the system!
                                    🙂

                                    Reply Quote 0
                                      1 Reply Last reply
                                    • linuxmint7
                                      linuxmint7 last edited by

                                      I would seriously consider running malwarebytes in Windows safe mode (F8 early start-up menu) at some point too.

                                      Reply Quote 0
                                        1 Reply Last reply
                                      • benda
                                        benda last edited by

                                        Hi,
                                        it helped me to open PROXY settings in opera, tick (although it wasn't selected) proxy settings and erase what was there. And disable proxy again.
                                        I believe I've selected sort of proxy protection during Bitdefender installation. Now I cannot rid of it.
                                        Above mentioned solution didn't work for all pages but helped a lot. I'll keep trying.

                                        Reply Quote 0
                                          1 Reply Last reply
                                        • First post
                                          Last post

                                        Computer browsers

                                        • Opera for Windows
                                        • Opera for Mac
                                        • Opera for Linux
                                        • Opera beta version
                                        • Opera USB

                                        Mobile browsers

                                        • Opera for Android
                                        • Opera Mini
                                        • Opera Touch
                                        • Opera for basic phones

                                        • Add-ons
                                        • Opera account
                                        • Wallpapers
                                        • Opera Ads

                                        • Help & support
                                        • Opera blogs
                                        • Opera forums
                                        • Dev.Opera

                                        • Security
                                        • Privacy
                                        • Cookies Policy
                                        • EULA
                                        • Terms of Service

                                        • About Opera
                                        • Press info
                                        • Jobs
                                        • Investors
                                        • Become a partner
                                        • Contact us

                                        Follow Opera

                                        • Opera - Facebook
                                        • Opera - Twitter
                                        • Opera - YouTube
                                        • Opera - LinkedIn
                                        • Opera - Instagram

                                        © Opera Software 1995-