Looking for logging into the Yahoo Com Uses An Invalid Security Certificate site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Yahoo Com Uses An Invalid Security Certificate site. After that you can login as usual with your login credentials.
https://support.mozilla.org/questions/1084597
https://support.mozilla.org/questions/1183949
https://support.mozilla.org/questions/1180282
https://support.mozilla.org/questions/1198018
http://www.fixya.com/support/t7610229-login_yahoo_com_uses_invalid_security
https://answers.yahoo.com/question/index?qid=20140911133304AAoyddy
https://www.youtube.com/watch?v=Hk0d1ksWfyo
https://groups.google.com/d/topic/mozilla.support.firefox/IWz5mUv5_5Y
https://support.postbox-inc.com/hc/en-us/articles/202924480-Invalid-Security-Certificate-Errors
http://forums.mozillazine.org/viewtopic.php?f=9&t=3031352
https://www.bleepingcomputer.com/forums/t/665526/firefox-frustration/
https://community.bt.com/t5/Email/BT-Mail-invalid-security-certificate/td-p/1600734