Your best option may be to contact the site, and raise your concerns that you are seeing genuine warnings that the site is not secure. I would start worrying. The site appears likely to have sensitive or financial information and so should be fully secure. It is not meeting the highest standards and so is generating warnings from browsers. If the site does not improve soon there is a possibility it will fall below the standard at which future versions of Firefox will allow you to connect with the site. (In particular the use of RC4 that's been broken since 2013 I think. The pre Release fx38 does not connect *) This is a report from a respected and trusted site assessing the technical security of the cable site * https://www.ssllabs.com/ssltest/analyze.html?d=optimum.net --------- ==*== Firefox 38 *An error occurred during a connection to www.optimum.net. Cannot communicate securely with peer: no common encryption algorithm(s). (Error code: ssl_error_no_cypher_overlap) * The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. * Please contact the web site owners to inform them of this problem.