We have a virtual terminal to process our credit card payments and are being told that they will be ending their support on RC4 encryption cipher. We have been asked to ensure that our browsers are up to date. I am running on Windows XP pro, Version 2002 service pack 3. My Firefox browser is 45.0 and says that it is up to date. I just would like to know what encryption cipher firefox uses to ensure that we will not lose access to our virtual terminal on March 31, 2016. many thanks, Lori